diff --git a/src/config/Paths.tsx b/src/config/Paths.tsx
index 9ac18a5..7b4bd93 100644
--- a/src/config/Paths.tsx
+++ b/src/config/Paths.tsx
@@ -54,6 +54,7 @@ export const Paths = {
     list: '/invoice/list',
     create: '/invoice/create',
     detail: '/invoice/',
+    update: '/invoice/update/',
   },
   newOrder: '/new-order',
   orderDetails: '/order/',
diff --git a/src/pages/invoice/Create.tsx b/src/pages/invoice/Create.tsx
index 4ea71b1..65a7368 100644
--- a/src/pages/invoice/Create.tsx
+++ b/src/pages/invoice/Create.tsx
@@ -40,13 +40,13 @@ const CreateInvoice: FC = () => {
     const [items, setItems] = useState<CreatePreInvoiceItemType[]>([createEmptyItem()]);
     const [attachmentFiles, setAttachmentFiles] = useState<File[]>([]);
 
-    const formik = useFormik<Pick<CreatePreInvoiceType, "userId" | "enableTax" | "approvalDeadline" | "paymentMethod" | "notes">>({
+    const formik = useFormik<Pick<CreatePreInvoiceType, "userId" | "enableTax" | "approvalDeadline" | "paymentMethod" | "description">>({
         initialValues: {
             userId: "",
             enableTax: false,
             approvalDeadline: "",
             paymentMethod: "",
-            notes: "",
+            description: "",
         },
         validationSchema: Yup.object({
             userId: !requestId
@@ -87,7 +87,7 @@ const CreateInvoice: FC = () => {
                 enableTax: values.enableTax,
                 approvalDeadline: moment(values.approvalDeadline, 'jYYYY/jMM/jDD').format('YYYY-MM-DD'),
                 ...(values.paymentMethod ? { paymentMethod: values.paymentMethod } : {}),
-                notes: values.notes,
+                description: values.description,
                 ...(attachments.length ? { attachments } : {}),
             };
 
@@ -243,10 +243,10 @@ const CreateInvoice: FC = () => {
                     <Textarea
                         label="توضیحات"
                         placeholder="توضیحات پیش فاکتور را وارد کنید..."
-                        value={formik.values.notes}
-                        onChange={(e) => formik.setFieldValue("notes", e.target.value)}
+                        value={formik.values.description}
+                        onChange={(e) => formik.setFieldValue("description", e.target.value)}
                         onBlur={formik.handleBlur}
-                        name="notes"
+                        name="description"
                     />
                 </div>
 
diff --git a/src/pages/invoice/ProformaInvoice.tsx b/src/pages/invoice/ProformaInvoice.tsx
index 1d29e1d..a00f61f 100644
--- a/src/pages/invoice/ProformaInvoice.tsx
+++ b/src/pages/invoice/ProformaInvoice.tsx
@@ -179,9 +179,11 @@ const ProformaInvoice: FC = () => {
                             key: 'actions',
                             title: '',
                             render: (item) => (
-                                <Link to={Paths.perfomaInvoice.detail + item.id}>
-                                    <Eye size={20} color='#8C90A3' />
-                                </Link>
+                                <div className='flex gap-2 items-center'>
+                                    <Link to={Paths.perfomaInvoice.update + item.id}>
+                                        <Eye size={20} color='#8C90A3' />
+                                    </Link>
+                                </div>
                             ),
                         },
                     ]}
diff --git a/src/pages/invoice/Update.tsx b/src/pages/invoice/Update.tsx
new file mode 100644
index 0000000..fa62ff8
--- /dev/null
+++ b/src/pages/invoice/Update.tsx
@@ -0,0 +1,315 @@
+import { useEffect, useState, type FC } from "react";
+import Button from "@/components/Button";
+import { TickSquare } from "iconsax-react";
+import { toast } from "@/shared/toast";
+import { useNavigate, useParams } from "react-router-dom";
+import { Paths } from "@/config/Paths";
+import { extractErrorMessage } from "@/config/func";
+import { useFormik } from "formik";
+import * as Yup from "yup";
+import type { CreatePreInvoiceItemType, UpdatePreInvoiceType } from "./types/Types";
+import InvoiceItemRow from "./components/InvoiceItemRow";
+import { Checkbox } from "@/components/ui/checkbox";
+import UploadBox from "@/components/UploadBox";
+import Textarea from "@/components/Textarea";
+import DatePickerComponent from "@/components/DatePicker";
+import { useGetInvoiceDetail, useUpdateInvoice } from "./hooks/useInvoiceData";
+import { useMultiUpload } from "../uploader/hooks/useUploader";
+import moment from "moment-jalaali";
+
+const createEmptyItem = (): CreatePreInvoiceItemType => ({
+  productId: "",
+  quantity: 1,
+  unitPrice: 0,
+  discount: 0,
+  description: "",
+});
+
+const UpdateInvoice: FC = () => {
+  const { id } = useParams<{ id: string }>();
+  const navigate = useNavigate();
+
+  const { data: invoiceData, isLoading: isLoadingInvoice } =
+    useGetInvoiceDetail(id);
+  const { mutate: submitUpdate, isPending } = useUpdateInvoice();
+  const multiUpload = useMultiUpload();
+
+  const invoice = invoiceData?.data;
+
+  const [items, setItems] = useState<CreatePreInvoiceItemType[]>([
+    createEmptyItem(),
+  ]);
+  const [attachmentFiles, setAttachmentFiles] = useState<File[]>([]);
+
+  const formik = useFormik<
+    Pick<
+      UpdatePreInvoiceType,
+      "enableTax" | "approvalDeadline" | "paymentMethod" | "description"
+    >
+  >({
+    initialValues: {
+      enableTax: false,
+      approvalDeadline: "",
+      paymentMethod: "",
+      description: "",
+    },
+    validationSchema: Yup.object({
+      approvalDeadline: Yup.string().required("مهلت تایید اجباری است."),
+    }),
+    onSubmit: async (values) => {
+      const validItems = items.filter(
+        (i) => i.productId && i.quantity > 0 && i.unitPrice >= 0
+      );
+
+      if (validItems.length === 0) {
+        toast(
+          "حداقل یک آیتم با محصول، تعداد و مبلغ واحد معتبر اضافه کنید.",
+          "error"
+        );
+        return;
+      }
+
+      const attachments: { type: string; url: string }[] =
+        invoice?.attachments?.map((a) => ({ type: a.type, url: a.url })) ?? [];
+
+      if (attachmentFiles.length) {
+        const uploadResult = await multiUpload.mutateAsync(attachmentFiles);
+        uploadResult?.data?.forEach((item) => {
+          attachments.push({
+            type: "uploads_attach",
+            url: item.url,
+          });
+        });
+      }
+
+      const params: UpdatePreInvoiceType = {
+        items: validItems.map((i) => ({
+          ...(i.id ? { id: i.id } : {}),
+          productId: i.productId,
+          quantity: i.quantity,
+          unitPrice: i.unitPrice,
+          discount: i.discount || 0,
+          description: i.description || "",
+        })),
+        enableTax: values.enableTax,
+        approvalDeadline: moment(
+          values.approvalDeadline,
+          "jYYYY/jMM/jDD"
+        ).format("YYYY-MM-DD"),
+        ...(values.paymentMethod ? { paymentMethod: values.paymentMethod } : {}),
+        description: values.description,
+        ...(attachments.length ? { attachments } : {}),
+      };
+
+      if (!id) return;
+
+      submitUpdate(
+        { id, params },
+        {
+          onSuccess: () => {
+            toast("پیش فاکتور با موفقیت ویرایش شد", "success");
+            navigate(Paths.perfomaInvoice.list);
+          },
+          onError: (error) => {
+            toast(extractErrorMessage(error), "error");
+          },
+        }
+      );
+    },
+  });
+
+  useEffect(() => {
+    if (invoice) {
+      formik.setValues({
+        enableTax: invoice.enableTax ?? false,
+        approvalDeadline: invoice.approvalDeadline
+          ? moment(invoice.approvalDeadline).format("jYYYY/jMM/jDD")
+          : "",
+        paymentMethod: invoice.paymentMethod ?? "",
+        description: invoice.description ?? "",
+      });
+
+      const mappedItems: CreatePreInvoiceItemType[] =
+        invoice.items?.length > 0
+          ? invoice.items.map((i) => ({
+              id: i.id,
+              productId: i.product?.id ?? "",
+              quantity: i.quantity ?? 1,
+              unitPrice: i.unitPrice ?? 0,
+              discount: i.discount ?? 0,
+              description: i.description ?? "",
+            }))
+          : [createEmptyItem()];
+
+      setItems(mappedItems);
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [invoice]);
+
+  const handleItemChange = (
+    index: number,
+    field: keyof CreatePreInvoiceItemType,
+    value: string | number
+  ) => {
+    const next = [...items];
+    next[index] = { ...next[index], [field]: value };
+    setItems(next);
+  };
+
+  const addItem = (currentIndex: number) => {
+    const current = items[currentIndex];
+    const hasProduct = !!current?.productId;
+    const hasQuantity = (current?.quantity ?? 0) > 0;
+    const hasUnitPrice = (current?.unitPrice ?? 0) > 0;
+
+    if (!hasProduct || !hasQuantity || !hasUnitPrice) {
+      toast("لطفاً محصول، تعداد و مبلغ واحد را وارد کنید.", "error");
+      return;
+    }
+    setItems([...items, createEmptyItem()]);
+  };
+
+  const removeItem = (index: number) => {
+    if (items.length <= 1) return;
+    setItems(items.filter((_, i) => i !== index));
+  };
+
+  const totalAmount = items.reduce(
+    (sum, i) => sum + (i.quantity || 0) * (i.unitPrice || 0) - (i.discount || 0),
+    0
+  );
+
+  if (isLoadingInvoice || !invoice) {
+    return (
+      <div className="mt-5 flex items-center justify-center min-h-[200px]">
+        <div className="text-[#888888]">در حال بارگذاری...</div>
+      </div>
+    );
+  }
+
+  return (
+    <div className="mt-5">
+      <div className="justify-between items-center flex">
+        <h1 className="text-lg font-light">
+          ویرایش پیش فاکتور #{invoice.invoiceNumber}
+        </h1>
+        <Button
+          className="w-fit px-5"
+          onClick={() => formik.handleSubmit()}
+          isLoading={isPending || multiUpload.isPending}
+        >
+          <div className="flex gap-2 items-center">
+            <TickSquare size={20} color="black" />
+            <div>ذخیره تغییرات</div>
+          </div>
+        </Button>
+      </div>
+
+      <div className="bg-white rounded-3xl p-6 mt-8">
+        <div className="font-light">اطلاعات پیش فاکتور</div>
+
+        <div className="mt-6 rowTwoInput">
+          <div className="opacity-70">
+            <div className="text-[13px] text-[#888888] mb-1.5">مشتری</div>
+            <div className="text-[15px]">
+              {invoice.user?.firstName && invoice.user?.lastName
+                ? `${invoice.user.firstName} ${invoice.user.lastName}`
+                : invoice.user?.phone ?? "-"}
+            </div>
+          </div>
+        </div>
+
+        <div className="mt-6">
+          {items.map((item, index) => (
+            <InvoiceItemRow
+              key={index}
+              item={item}
+              index={index}
+              onChange={handleItemChange}
+              onAdd={() => addItem(index)}
+              onRemove={() => removeItem(index)}
+              canRemove={items.length > 1}
+            />
+          ))}
+        </div>
+
+        <div className="mt-6 flex gap-2 items-center">
+          <Checkbox
+            id="enableTax"
+            checked={formik.values.enableTax}
+            onCheckedChange={(checked) =>
+              formik.setFieldValue("enableTax", !!checked)
+            }
+          />
+          <label
+            htmlFor="enableTax"
+            className="text-[13px] cursor-pointer select-none"
+          >
+            مالیات بر ارزش افزوده (۱۰ درصد)
+          </label>
+        </div>
+
+        <div className="rowTwoInput mt-6">
+          <DatePickerComponent
+            label="مهلت تایید"
+            placeholder="انتخاب تاریخ"
+            defaultValue={formik.values.approvalDeadline || undefined}
+            onChange={(date) => {
+              formik.setFieldValue("approvalDeadline", date);
+              formik.setFieldTouched("approvalDeadline", true);
+            }}
+            error_text={
+              formik.errors.approvalDeadline && formik.touched.approvalDeadline
+                ? formik.errors.approvalDeadline
+                : ""
+            }
+          />
+        </div>
+
+        <div className="mt-6">
+          <Textarea
+            label="روش پرداخت"
+            name="paymentMethod"
+            placeholder="روش پرداخت"
+            value={formik.values.paymentMethod}
+            onChange={(e) => formik.setFieldValue("paymentMethod", e.target.value)}
+            onBlur={formik.handleBlur}
+            error_text={
+              formik.errors.paymentMethod && formik.touched.paymentMethod
+                ? formik.errors.paymentMethod
+                : ""
+            }
+          />
+        </div>
+
+        <div className="mt-6">
+          <Textarea
+            label="توضیحات"
+            placeholder="توضیحات پیش فاکتور را وارد کنید..."
+            value={formik.values.description}
+            onChange={(e) => formik.setFieldValue("description", e.target.value)}
+            onBlur={formik.handleBlur}
+            name="description"
+          />
+        </div>
+
+        <div className="mt-6">
+          <UploadBox
+            isMultiple
+            label="فایل ضمیمه"
+            onChange={setAttachmentFiles}
+          />
+        </div>
+
+        <div className="mt-6 bg-[#F5F7FC] h-12 px-4 flex justify-between items-center rounded-xl">
+          <div className="text-[#888888] text-[13px]">مبلغ کل:</div>
+          <div className="font-semibold text-[13px]">
+            {totalAmount.toLocaleString("fa-IR")} تومان
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default UpdateInvoice;
diff --git a/src/pages/invoice/hooks/useInvoiceData.ts b/src/pages/invoice/hooks/useInvoiceData.ts
index 6d364f8..c551361 100644
--- a/src/pages/invoice/hooks/useInvoiceData.ts
+++ b/src/pages/invoice/hooks/useInvoiceData.ts
@@ -1,5 +1,6 @@
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import * as api from "../service/InvoiceService";
+import type { UpdatePreInvoiceType } from "../types/Types";
 
 export const useCreateInvoice = () => {
   const queryClient = useQueryClient();
@@ -18,3 +19,28 @@ export const useGetInvoice = (page = 1) => {
     queryFn: () => api.getInvoice(page),
   });
 };
+
+export const useGetInvoiceDetail = (id: string | undefined) => {
+  return useQuery({
+    queryKey: ["invoice", id],
+    queryFn: () => api.getInvoiceById(id!),
+    enabled: !!id,
+  });
+};
+
+export const useUpdateInvoice = () => {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: ({
+      id,
+      params,
+    }: {
+      id: string;
+      params: UpdatePreInvoiceType;
+    }) => api.updateInvoice(id, params),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["invoice"] });
+    },
+  });
+};
diff --git a/src/pages/invoice/service/InvoiceService.ts b/src/pages/invoice/service/InvoiceService.ts
index 811f6fd..24855cf 100644
--- a/src/pages/invoice/service/InvoiceService.ts
+++ b/src/pages/invoice/service/InvoiceService.ts
@@ -1,5 +1,10 @@
 import axios from "@/config/axios";
-import type { CreatePreInvoiceType, GetInvoiceResponseType } from "../types/Types";
+import type {
+  CreatePreInvoiceType,
+  GetInvoiceResponseType,
+  InvoiceType,
+  UpdatePreInvoiceType,
+} from "../types/Types";
 
 export const createInvoice = async (params: CreatePreInvoiceType) => {
   const { data } = await axios.post("/admin/invoice", params);
@@ -12,3 +17,13 @@ export const getInvoice = async (page = 1): Promise<GetInvoiceResponseType> => {
   });
   return data;
 };
+
+export const getInvoiceById = async (id: string) => {
+  const { data } = await axios.get<{ data: InvoiceType }>(`/admin/invoice/${id}`);
+  return data;
+};
+
+export const updateInvoice = async (id: string, params: UpdatePreInvoiceType) => {
+  const { data } = await axios.patch(`/admin/invoice/${id}`, params);
+  return data;
+};
diff --git a/src/pages/invoice/types/Types.ts b/src/pages/invoice/types/Types.ts
index eec8f80..4b79ab5 100644
--- a/src/pages/invoice/types/Types.ts
+++ b/src/pages/invoice/types/Types.ts
@@ -1,4 +1,5 @@
 export type CreatePreInvoiceItemType = {
+  id?: string;
   productId: string;
   quantity: number;
   unitPrice: number;
@@ -12,13 +13,23 @@ export type InvoiceAttachmentType = {
 };
 
 export type CreatePreInvoiceType = {
+  id?: string;
   requestId?: string;
   userId?: string;
   items: CreatePreInvoiceItemType[];
   enableTax: boolean;
   approvalDeadline: string;
   paymentMethod?: string;
-  notes?: string;
+  description?: string;
+  attachments?: InvoiceAttachmentType[];
+};
+
+export type UpdatePreInvoiceType = {
+  items: CreatePreInvoiceItemType[];
+  enableTax: boolean;
+  approvalDeadline: string;
+  paymentMethod?: string;
+  description?: string;
   attachments?: InvoiceAttachmentType[];
 };
 
@@ -91,6 +102,7 @@ export type InvoiceType = {
   approvalDeadline: string;
   attachments: InvoiceAttachmentType[];
   paymentMethod: string;
+  description?: string;
   items: InvoiceItemType[];
 };
 
diff --git a/src/router/MainRouter.tsx b/src/router/MainRouter.tsx
index bd284bb..02d2fcc 100644
--- a/src/router/MainRouter.tsx
+++ b/src/router/MainRouter.tsx
@@ -14,6 +14,7 @@ import CreateProduct from "@/pages/product/Create";
 import CreateFeature from "@/pages/Features/Create";
 import PrintService from "@/pages/service/PrintService";
 import DetailPerfomaInvoice from "@/pages/invoice/DetailPerfomaInvoice";
+import UpdateInvoice from "@/pages/invoice/Update";
 import AnnouncementList from "@/pages/annoncement/List";
 import AnnouncementUpdate from "@/pages/annoncement/Update";
 import AnnouncementCreate from "@/pages/annoncement/Create";
@@ -63,6 +64,7 @@ const MainRouter: FC = () => {
                             <Route path={Paths.perfomaInvoice.list} element={<ProformaInvoice />} />
                             <Route path={Paths.perfomaInvoice.create} element={<CreateInvoice />} />
                             <Route path={Paths.perfomaInvoice.detail + ":id"} element={<DetailPerfomaInvoice />} />
+                            <Route path={Paths.perfomaInvoice.update + ":id"} element={<UpdateInvoice />} />
                             <Route path={Paths.requests.list} element={<RequestList />} />
                             <Route path={Paths.requests.detail + ":id"} element={<RequestDetail />} />
                             <Route path={Paths.product.list} element={<ProductList />} />