diff --git a/src/pages/taskmanager/components/task-detail/TaskDetailHeader.tsx b/src/pages/taskmanager/components/task-detail/TaskDetailHeader.tsx
index d7f6452..f0fb6dc 100644
--- a/src/pages/taskmanager/components/task-detail/TaskDetailHeader.tsx
+++ b/src/pages/taskmanager/components/task-detail/TaskDetailHeader.tsx
@@ -1,21 +1,61 @@
+import { Popover, PopoverButton, PopoverPanel } from "@headlessui/react";
 import { ArrowDown2, CloseCircle } from "iconsax-react";
 import { type FC } from "react";
 import TrashWithConfrim from "../../../../components/TrashWithConfrim";
+import { clx } from "../../../../helpers/utils";
+import type { Column } from "../../types";
 
 type Props = {
-  statusLabel: string;
+  columns: Column[];
+  selectedPhaseId: string;
+  onPhaseChange: (phaseId: string) => void;
+  isChangingPhase?: boolean;
   onClose: () => void;
   onDelete?: () => void;
   isDeleting?: boolean;
 };
 
-const TaskDetailHeader: FC<Props> = ({ statusLabel, onClose, onDelete, isDeleting }) => {
+const TaskDetailHeader: FC<Props> = ({
+  columns,
+  selectedPhaseId,
+  onPhaseChange,
+  isChangingPhase,
+  onClose,
+  onDelete,
+  isDeleting,
+}) => {
+  const selectedColumn = columns.find((column) => column.id === selectedPhaseId);
+
   return (
     <div className="flex items-center justify-between border-b border-border pb-4">
-      <button type="button" className="flex items-center gap-1.5 bg-white/60 rounded-full px-4 py-2 text-xs font-medium cursor-pointer">
-        <span>{statusLabel}</span>
-        <ArrowDown2 size={14} color="#292D32" />
-      </button>
+      <Popover className="relative">
+        <PopoverButton
+          disabled={isChangingPhase}
+          className="flex items-center gap-1.5 bg-white/60 rounded-full px-4 py-2 text-xs font-medium cursor-pointer disabled:opacity-50 outline-none"
+        >
+          <span>{selectedColumn?.title ?? ""}</span>
+          <ArrowDown2 size={14} color="#292D32" />
+        </PopoverButton>
+
+        <PopoverPanel
+          anchor="bottom start"
+          className="z-20 mt-1 min-w-[160px] rounded-xl bg-white shadow-md border border-border py-1 text-sm"
+        >
+          {columns.map((column) => (
+            <button
+              key={column.id}
+              type="button"
+              onClick={() => onPhaseChange(column.id)}
+              className={clx(
+                "w-full px-4 py-2.5 text-right transition-colors hover:bg-black/5",
+                column.id === selectedPhaseId && "font-bold bg-black/5",
+              )}
+            >
+              {column.title}
+            </button>
+          ))}
+        </PopoverPanel>
+      </Popover>
 
       <div className="flex items-center gap-2">
         {onDelete ? (
diff --git a/src/pages/taskmanager/components/task-detail/TaskDetailModal.tsx b/src/pages/taskmanager/components/task-detail/TaskDetailModal.tsx
index 96b6f23..9c06cd9 100644
--- a/src/pages/taskmanager/components/task-detail/TaskDetailModal.tsx
+++ b/src/pages/taskmanager/components/task-detail/TaskDetailModal.tsx
@@ -4,9 +4,9 @@ import { toast } from "react-toastify";
 import DefaulModal from "../../../../components/DefaulModal";
 import PageLoading from "../../../../components/PageLoading";
 import { ErrorType } from "../../../../helpers/types";
-import { useDeleteTask, useGetTaskDetail, useUpdateTask } from "../../task/hooks/useTaskData";
+import { useChangeTaskPhase, useDeleteTask, useGetTaskDetail, useUpdateTask } from "../../task/hooks/useTaskData";
 import type { TaskDetailType } from "../../task/types/TaskTypes";
-import type { Task } from "../../types";
+import type { Column, Task } from "../../types";
 import AttachmentList from "./attachment/List";
 import CheckLists from "./checklist/List";
 import TaskDetailDescription from "./TaskDetailDescription";
@@ -17,11 +17,13 @@ import type { TaskDetailTab } from "./types";
 type Props = {
   open: boolean;
   task: Task | null;
-  statusLabel: string;
+  columns: Column[];
+  projectId: string;
   onClose: () => void;
+  onTaskPhaseChanged?: (taskId: string, taskPhaseId: string) => void;
 };
 
-const TaskDetailModal: FC<Props> = ({ open, task, statusLabel, onClose }) => {
+const TaskDetailModal: FC<Props> = ({ open, task, columns, projectId, onClose, onTaskPhaseChanged }) => {
   const { t } = useTranslation("global");
   const [activeTab, setActiveTab] = useState<TaskDetailTab | null>(null);
   const [title, setTitle] = useState("");
@@ -31,6 +33,7 @@ const TaskDetailModal: FC<Props> = ({ open, task, statusLabel, onClose }) => {
 
   const getTaskDetail = useGetTaskDetail(task?.id ?? "", open && !!task?.id);
   const updateTask = useUpdateTask();
+  const changeTaskPhase = useChangeTaskPhase();
   const deleteTask = useDeleteTask();
 
   const rawTaskDetail = getTaskDetail.data?.data?.task ?? getTaskDetail.data?.data;
@@ -61,12 +64,16 @@ const TaskDetailModal: FC<Props> = ({ open, task, statusLabel, onClose }) => {
     initialDescriptionRef.current = taskDetail.description ?? "";
   }, [taskDetail]);
 
+  if (!task) return null;
+
+  const selectedPhaseId = taskDetail?.taskPhaseId ?? task.columnId;
+
   const handleTabChange = (tab: TaskDetailTab) => {
     setActiveTab((prev) => (prev === tab ? null : tab));
   };
 
   const handleDelete = () => {
-    if (!task?.id) return;
+    if (!task.id) return;
 
     deleteTask.mutate(
       { id: task.id, projectId: taskDetail?.projectId ?? "" },
@@ -83,8 +90,6 @@ const TaskDetailModal: FC<Props> = ({ open, task, statusLabel, onClose }) => {
   };
 
   const saveField = (field: "title" | "description", value: string) => {
-    if (!task?.id) return;
-
     const initialValue = field === "title" ? initialTitleRef.current : initialDescriptionRef.current;
     if (value === initialValue) return;
 
@@ -111,7 +116,22 @@ const TaskDetailModal: FC<Props> = ({ open, task, statusLabel, onClose }) => {
     );
   };
 
-  if (!task) return null;
+  const handlePhaseChange = (taskPhaseId: string) => {
+    if (taskPhaseId === selectedPhaseId) return;
+
+    changeTaskPhase.mutate(
+      { id: task.id, params: { taskPhaseId }, projectId: taskDetail?.projectId ?? projectId },
+      {
+        onSuccess: () => {
+          onTaskPhaseChanged?.(task.id, taskPhaseId);
+          toast.success(t("success"));
+        },
+        onError: (error: ErrorType) => {
+          toast.error(error.response?.data?.error.message[0]);
+        },
+      },
+    );
+  };
 
   return (
     <DefaulModal open={open} close={onClose} width={680}>
@@ -120,7 +140,10 @@ const TaskDetailModal: FC<Props> = ({ open, task, statusLabel, onClose }) => {
       ) : (
         <>
           <TaskDetailHeader
-            statusLabel={statusLabel}
+            columns={columns}
+            selectedPhaseId={selectedPhaseId}
+            onPhaseChange={handlePhaseChange}
+            isChangingPhase={changeTaskPhase.isPending}
             onClose={onClose}
             onDelete={handleDelete}
             isDeleting={deleteTask.isPending}
diff --git a/src/pages/taskmanager/task-phase/hooks/useTaskPhaseData.ts b/src/pages/taskmanager/task-phase/hooks/useTaskPhaseData.ts
index 2c62e35..339da50 100644
--- a/src/pages/taskmanager/task-phase/hooks/useTaskPhaseData.ts
+++ b/src/pages/taskmanager/task-phase/hooks/useTaskPhaseData.ts
@@ -1,6 +1,6 @@
 import { useMutation, useQueryClient } from "@tanstack/react-query";
 import * as api from "../service/TaskPhaseService";
-import { CreateTaskPhaseType } from "../types/TaskPhaseTypes";
+import { CreateTaskPhaseType, UpdateTaskPhaseType } from "../types/TaskPhaseTypes";
 
 export const useCreateTaskPhase = () => {
   const queryClient = useQueryClient();
@@ -16,6 +16,18 @@ export const useCreateTaskPhase = () => {
   });
 };
 
+export const useUpdateTaskPhase = () => {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: ({ id, params }: { id: string; params: UpdateTaskPhaseType; projectId: string }) =>
+      api.updateTaskPhase(id, params),
+    onSuccess: (_data, variables) => {
+      queryClient.invalidateQueries({ queryKey: ["project", variables.projectId] });
+    },
+  });
+};
+
 export const useDeleteTaskPhase = () => {
   const queryClient = useQueryClient();
 
diff --git a/src/pages/taskmanager/task-phase/service/TaskPhaseService.ts b/src/pages/taskmanager/task-phase/service/TaskPhaseService.ts
index 5e3683b..9c01097 100644
--- a/src/pages/taskmanager/task-phase/service/TaskPhaseService.ts
+++ b/src/pages/taskmanager/task-phase/service/TaskPhaseService.ts
@@ -1,11 +1,16 @@
 import axios from "../../../../config/axios";
-import { CreateTaskPhaseType } from "../types/TaskPhaseTypes";
+import { CreateTaskPhaseType, UpdateTaskPhaseType } from "../types/TaskPhaseTypes";
 
 export const createTaskPhase = async (params: CreateTaskPhaseType) => {
   const { data } = await axios.post(`/task-manager/task-phases`, params);
   return data;
 };
 
+export const updateTaskPhase = async (id: string, params: UpdateTaskPhaseType) => {
+  const { data } = await axios.patch(`/task-manager/task-phases/${id}`, params);
+  return data;
+};
+
 export const deleteTaskPhase = async (id: string) => {
   const { data } = await axios.delete(`/task-manager/task-phases/${id}`);
   return data;
diff --git a/src/pages/taskmanager/task-phase/types/TaskPhaseTypes.ts b/src/pages/taskmanager/task-phase/types/TaskPhaseTypes.ts
index 316841b..38d9d26 100644
--- a/src/pages/taskmanager/task-phase/types/TaskPhaseTypes.ts
+++ b/src/pages/taskmanager/task-phase/types/TaskPhaseTypes.ts
@@ -5,6 +5,10 @@ export type CreateTaskPhaseType = {
   projectId: string;
 };
 
+export type UpdateTaskPhaseType = {
+  order: number;
+};
+
 export type TaskPhaseItemType = {
   id: string;
   name: string;
diff --git a/src/pages/taskmanager/task/hooks/useTaskData.ts b/src/pages/taskmanager/task/hooks/useTaskData.ts
index 50b6911..dba1e7e 100644
--- a/src/pages/taskmanager/task/hooks/useTaskData.ts
+++ b/src/pages/taskmanager/task/hooks/useTaskData.ts
@@ -1,6 +1,7 @@
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import * as api from "../service/TaskService";
 import {
+  ChangeTaskPhaseType,
   CreateCheckListItemType,
   CreateTaskAttachmentType,
   CreateTaskRemarkType,
@@ -40,6 +41,20 @@ export const useUpdateTask = () => {
   });
 };
 
+export const useChangeTaskPhase = () => {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: ({ id, params }: { id: string; params: ChangeTaskPhaseType; projectId: string }) =>
+      api.changeTaskPhase(id, params),
+    onSuccess: (_data, variables) => {
+      queryClient.invalidateQueries({ queryKey: ["task-detail", variables.id] });
+      queryClient.invalidateQueries({ queryKey: ["project", variables.projectId] });
+      queryClient.invalidateQueries({ queryKey: ["project"] });
+    },
+  });
+};
+
 export const useDeleteTask = () => {
   const queryClient = useQueryClient();
 
diff --git a/src/pages/taskmanager/task/service/TaskService.ts b/src/pages/taskmanager/task/service/TaskService.ts
index 6066723..78fb239 100644
--- a/src/pages/taskmanager/task/service/TaskService.ts
+++ b/src/pages/taskmanager/task/service/TaskService.ts
@@ -1,5 +1,6 @@
 import axios from "../../../../config/axios";
 import {
+  ChangeTaskPhaseType,
   CreateCheckListItemResponse,
   CreateCheckListItemType,
   CreateTaskAttachmentType,
@@ -27,6 +28,11 @@ export const updateTask = async (id: string, params: UpdateTaskType) => {
   return data;
 };
 
+export const changeTaskPhase = async (id: string, params: ChangeTaskPhaseType) => {
+  const { data } = await axios.patch(`/task-manager/tasks/${id}/change-phase`, params);
+  return data;
+};
+
 export const deleteTask = async (id: string) => {
   const { data } = await axios.delete(`/task-manager/tasks/${id}`);
   return data;
diff --git a/src/pages/taskmanager/task/types/TaskTypes.ts b/src/pages/taskmanager/task/types/TaskTypes.ts
index 544760a..486942b 100644
--- a/src/pages/taskmanager/task/types/TaskTypes.ts
+++ b/src/pages/taskmanager/task/types/TaskTypes.ts
@@ -107,6 +107,10 @@ export type TaskDetailType = {
   attachments?: TaskAttachmentType[];
 };
 
+export type ChangeTaskPhaseType = {
+  taskPhaseId: string;
+};
+
 export type UpdateTaskType = Partial<
   Pick<TaskDetailType, "title" | "description" | "taskPhaseId" | "order" | "startDate" | "endDate">
 > & {
diff --git a/src/pages/taskmanager/utils/reorderColumns.ts b/src/pages/taskmanager/utils/reorderColumns.ts
index 4306bbb..1b52f46 100644
--- a/src/pages/taskmanager/utils/reorderColumns.ts
+++ b/src/pages/taskmanager/utils/reorderColumns.ts
@@ -15,5 +15,5 @@ export const reorderColumns = (
   const result = [...columns];
   const [removed] = result.splice(oldIndex, 1);
   result.splice(newIndex, 0, removed);
-  return result;
+  return result.map((column, index) => ({ ...column, order: index + 1 }));
 };
diff --git a/src/pages/taskmanager/workspace.tsx b/src/pages/taskmanager/workspace.tsx
index 1a84f5c..38c39f6 100644
--- a/src/pages/taskmanager/workspace.tsx
+++ b/src/pages/taskmanager/workspace.tsx
@@ -1,11 +1,15 @@
 import { useEffect, useMemo, useState, type FC } from "react";
 import { useParams } from "react-router-dom";
+import { toast } from "react-toastify";
 import PageLoading from "../../components/PageLoading";
+import { ErrorType } from "../../helpers/types";
 import AddNewColumn from "./components/AddNewColumn";
 import Column from "./components/Column";
 import HeaderWorkspace from "./components/HeaderWorkspace";
 import TaskDetailModal from "./components/task-detail/TaskDetailModal";
 import { useGetProject } from "./project/hooks/useProjectData";
+import { useUpdateTaskPhase } from "./task-phase/hooks/useTaskPhaseData";
+import { useChangeTaskPhase } from "./task/hooks/useTaskData";
 import { mapTaskItemToTask } from "./task/utils/mapTaskItemToTask";
 import type { TaskItemType } from "./task/types/TaskTypes";
 import type { TaskPhaseItemType } from "./task-phase/types/TaskPhaseTypes";
@@ -16,6 +20,8 @@ import { reorderTasks } from "./utils/reorderTasks";
 const Workspace: FC = () => {
   const { slug: projectId = "" } = useParams<{ slug: string }>();
   const { data: project, isPending } = useGetProject(projectId);
+  const changeTaskPhase = useChangeTaskPhase();
+  const updateTaskPhase = useUpdateTaskPhase();
   const [columns, setColumns] = useState<ColumnType[]>([]);
   const [tasks, setTasks] = useState<Task[]>([]);
   const [draggedTaskId, setDraggedTaskId] = useState<string | null>(null);
@@ -66,8 +72,48 @@ const Workspace: FC = () => {
 
   const handleDrop = (columnId: string, index: number) => {
     if (!draggedTaskId) return;
-    setTasks((prev) => reorderTasks(prev, draggedTaskId, columnId, index));
+
+    const draggedTask = tasks.find((task) => task.id === draggedTaskId);
+    if (!draggedTask) return;
+
+    const previousTasks = tasks;
+    const columnChanged = draggedTask.columnId !== columnId;
+    const nextTasks = reorderTasks(tasks, draggedTaskId, columnId, index);
+    const movedTask = nextTasks.find((task) => task.id === draggedTaskId) ?? null;
+
+    setTasks(nextTasks);
     setDraggedTaskId(null);
+
+    if (selectedTask?.id === draggedTaskId && movedTask) {
+      setSelectedTask(movedTask);
+    }
+
+    if (!columnChanged) return;
+
+    changeTaskPhase.mutate(
+      { id: draggedTaskId, params: { taskPhaseId: columnId }, projectId },
+      {
+        onError: (error: ErrorType) => {
+          setTasks(previousTasks);
+          if (selectedTask?.id === draggedTaskId) {
+            setSelectedTask(draggedTask);
+          }
+          toast.error(error.response?.data?.error.message[0]);
+        },
+      },
+    );
+  };
+
+  const handleTaskPhaseChanged = (taskId: string, taskPhaseId: string) => {
+    setTasks((prev) => {
+      const task = prev.find((item) => item.id === taskId);
+      if (!task || task.columnId === taskPhaseId) return prev;
+
+      const destinationIndex = prev.filter((item) => item.columnId === taskPhaseId).length;
+      return reorderTasks(prev, taskId, taskPhaseId, destinationIndex);
+    });
+
+    setSelectedTask((prev) => (prev?.id === taskId ? { ...prev, columnId: taskPhaseId } : prev));
   };
 
   const handleColumnDragStart = (columnId: string) => {
@@ -80,20 +126,37 @@ const Workspace: FC = () => {
 
   const handleColumnDrop = (overColumnId: string) => {
     if (!draggedColumnId || draggedColumnId === overColumnId) return;
-    setColumns((prev) => reorderColumns(prev, draggedColumnId, overColumnId));
+
+    const previousColumns = columns;
+    const nextColumns = reorderColumns(columns, draggedColumnId, overColumnId);
+    const movedColumn = nextColumns.find((column) => column.id === draggedColumnId);
+
+    setColumns(nextColumns);
     setDraggedColumnId(null);
+
+    if (!movedColumn?.order) return;
+
+    updateTaskPhase.mutate(
+      { id: draggedColumnId, params: { order: movedColumn.order }, projectId },
+      {
+        onError: (error: ErrorType) => {
+          setColumns(previousColumns);
+          toast.error(error.response?.data?.error.message[0]);
+        },
+      },
+    );
   };
 
+  const nextColumnOrder = columns.length
+    ? Math.max(...columns.map((column) => column.order ?? 0)) + 1
+    : 1;
+
   const handleColumnCreated = (phase: TaskPhaseItemType) => {
-    setColumns((prev) => [
-      ...prev,
-      {
-        id: phase.id,
-        title: phase.name,
-        color: phase.color,
-        order: phase.order,
-      },
-    ]);
+    setColumns((prev) =>
+      [...prev, { id: phase.id, title: phase.name, color: phase.color, order: phase.order }].sort(
+        (a, b) => (a.order ?? 0) - (b.order ?? 0),
+      ),
+    );
   };
 
   const handleColumnDeleted = (columnId: string) => {
@@ -111,8 +174,6 @@ const Workspace: FC = () => {
     ]);
   };
 
-  const selectedTaskColumn = selectedTask ? columns.find((column) => column.id === selectedTask.columnId) : null;
-
   if (isPending) {
     return <PageLoading />;
   }
@@ -144,7 +205,7 @@ const Workspace: FC = () => {
 
           <AddNewColumn
             projectId={projectId}
-            nextOrder={columns.length}
+            nextOrder={nextColumnOrder}
             onColumnCreated={handleColumnCreated}
           />
         </div>
@@ -153,8 +214,10 @@ const Workspace: FC = () => {
       <TaskDetailModal
         open={selectedTask !== null}
         task={selectedTask}
-        statusLabel={selectedTaskColumn?.title ?? ""}
+        columns={columns}
+        projectId={projectId}
         onClose={() => setSelectedTask(null)}
+        onTaskPhaseChanged={handleTaskPhaseChanged}
       />
     </div>
   );