diff --git a/src/views/contract/launch/components/UploadSignedModal.vue b/src/views/contract/launch/components/UploadSignedModal.vue
new file mode 100644
index 0000000..53787ea
--- /dev/null
+++ b/src/views/contract/launch/components/UploadSignedModal.vue
@@ -0,0 +1,248 @@
+<template>
+  <a-modal
+    v-model:open="visible"
+    title="上传已签署版本"
+    width="560px"
+    :mask-closable="false"
+    :confirm-loading="submitting"
+    ok-text="确认提交"
+    cancel-text="取消"
+    @ok="handleSubmit"
+  >
+    <div class="upload-signed-body">
+      <a-descriptions :column="1" size="small" bordered class="contract-brief">
+        <a-descriptions-item label="合同名称">
+          {{ row?.contractName || "-" }}
+        </a-descriptions-item>
+        <a-descriptions-item label="合同编码">
+          {{ row?.contractCode || "-" }}
+        </a-descriptions-item>
+      </a-descriptions>
+
+      <a-divider style="margin: 16px 0" />
+
+      <a-form layout="vertical">
+        <a-form-item label="上传已签署合同文件" required>
+          <div
+            class="upload-dragger"
+            :class="{ 'is-dragover': dragOver }"
+            @click="triggerFileInput"
+            @dragover.prevent="dragOver = true"
+            @dragleave.prevent="dragOver = false"
+            @drop.prevent="handleFileDrop"
+          >
+            <input
+              ref="fileInputRef"
+              type="file"
+              accept=".pdf,.doc,.docx"
+              style="display: none"
+              @change="handleFileSelect"
+            />
+            <template v-if="!uploadFile">
+              <cloud-upload-outlined :style="{ 'fontSize': '36px', 'color': '#b0b8c5' }" />
+              <p class="upload-text">点击或将已签署文件拖拽到这里</p>
+              <p class="upload-hint">支持 PDF、DOC、DOCX 文件，且小于 20M</p>
+            </template>
+            <template v-else>
+              <file-text-outlined :style="{ 'fontSize': '36px', 'color': '#10b981' }" />
+              <p class="file-name">{{ uploadFile.name }}</p>
+              <p class="file-size">{{ formatFileSize(uploadFile.size) }}</p>
+              <a-button size="small" danger @click.stop="removeFile">移除</a-button>
+            </template>
+          </div>
+        </a-form-item>
+
+        <a-form-item label="不在线签署的原因" required>
+          <a-textarea
+            v-model:value="offlineReason"
+            :rows="4"
+            placeholder="请填写不在线签署的原因，例如：客户无法配合在线签署、对方无数字证书等"
+            :maxlength="500"
+            show-count
+          />
+        </a-form-item>
+      </a-form>
+    </div>
+  </a-modal>
+</template>
+
+<script setup>
+import { ref } from "vue";
+import { message } from "ant-design-vue";
+import { CloudUploadOutlined, FileTextOutlined } from "@ant-design/icons-vue";
+import { finishLaunchSeal, uploadLaunchFile } from "@/api/launch.js";
+
+const SUCCESS_CODE = "0000";
+
+const visible = ref(false);
+const row = ref(null);
+const uploadFile = ref(null);
+const offlineReason = ref("");
+const dragOver = ref(false);
+const submitting = ref(false);
+const fileInputRef = ref(null);
+
+const emit = defineEmits(["done"]);
+
+function showModal(record) {
+  row.value = record;
+  uploadFile.value = null;
+  offlineReason.value = "";
+  dragOver.value = false;
+  submitting.value = false;
+  visible.value = true;
+}
+
+function triggerFileInput() {
+  fileInputRef.value?.click();
+}
+
+function handleFileSelect(event) {
+  const file = event.target?.files?.[0];
+  if (file) {
+    validateAndSetFile(file);
+  }
+  if (fileInputRef.value) {
+    fileInputRef.value.value = "";
+  }
+}
+
+function handleFileDrop(event) {
+  dragOver.value = false;
+  const file = event.dataTransfer?.files?.[0];
+  if (file) {
+    validateAndSetFile(file);
+  }
+}
+
+function validateAndSetFile(file) {
+  const allowedExts = [".pdf", ".doc", ".docx"];
+  const ext = "." + (file.name.split(".").pop()?.toLowerCase() || "");
+  if (!allowedExts.includes(ext)) {
+    message.error("只支持 PDF、DOC、DOCX 格式文件");
+    return;
+  }
+  const maxSize = 20 * 1024 * 1024;
+  if (file.size > maxSize) {
+    message.error("文件大小不能超过 20M");
+    return;
+  }
+  uploadFile.value = file;
+}
+
+function removeFile() {
+  uploadFile.value = null;
+}
+
+function formatFileSize(bytes) {
+  if (!bytes) return "-";
+  if (bytes < 1024) return bytes + " B";
+  if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(1) + " KB";
+  return (bytes / (1024 * 1024)).toFixed(1) + " MB";
+}
+
+async function handleSubmit() {
+  if (!uploadFile.value) {
+    message.warning("请先上传已签署文件");
+    return;
+  }
+  const reason = (offlineReason.value || "").trim();
+  if (!reason) {
+    message.warning("请填写不在线签署的原因");
+    return;
+  }
+
+  submitting.value = true;
+  try {
+    const formData = new FormData();
+    formData.append("file", uploadFile.value);
+    const uploadRes = await uploadLaunchFile(formData);
+    if (String(uploadRes?.code || "") !== SUCCESS_CODE) {
+      message.error(uploadRes?.message || uploadRes?.msg || "文件上传失败");
+      submitting.value = false;
+      return;
+    }
+    const filePath = uploadRes?.result || "";
+    const fileName = uploadFile.value.name;
+    const fileType = fileName.split(".").pop()?.toLowerCase() || "pdf";
+    const fileSize = uploadFile.value.size;
+
+    const finishRes = await finishLaunchSeal(row.value.id, {
+      sealContractId: row.value.sealContractId || `OFFLINE-SEAL-${row.value.id}`,
+      sealContractStatus: 2000,
+      signedFileName: fileName,
+      signedFilePath: filePath,
+      signedFileType: fileType,
+      signedFileSize: fileSize,
+      signedOfflineReason: reason,
+    });
+
+    if (String(finishRes?.code || "") !== SUCCESS_CODE) {
+      message.error(finishRes?.message || finishRes?.msg || "签署完结回写失败");
+      submitting.value = false;
+      return;
+    }
+
+    message.success("已签署版本上传成功，合同已流转到待采集");
+    visible.value = false;
+    emit("done");
+  } catch (err) {
+    message.error("操作异常：" + (err?.message || "未知错误"));
+  } finally {
+    submitting.value = false;
+  }
+}
+
+defineExpose({ showModal });
+</script>
+
+<style scoped>
+.upload-signed-body {
+  padding: 4px 0;
+}
+
+.contract-brief {
+  margin-bottom: 4px;
+}
+
+.upload-dragger {
+  border: 2px dashed #dcdfe6;
+  border-radius: 10px;
+  padding: 24px 16px;
+  text-align: center;
+  cursor: pointer;
+  transition: all 0.25s;
+  background: #fafbfc;
+  min-height: 120px;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 8px;
+}
+
+.upload-dragger:hover,
+.is-dragover {
+  border-color: #3b6fa0;
+  background: #eaf2f9;
+}
+
+.upload-text,
+.file-name {
+  font-size: 14px;
+  color: #2c3e50;
+  margin: 4px 0 2px;
+}
+
+.file-name {
+  font-weight: 500;
+  color: #10b981;
+}
+
+.upload-hint,
+.file-size {
+  font-size: 12px;
+  color: #8b95a5;
+  margin: 0;
+}
+</style>
diff --git a/src/views/contract/launch/index.vue b/src/views/contract/launch/index.vue
index c4a8800..d5e7ad7 100644
--- a/src/views/contract/launch/index.vue
+++ b/src/views/contract/launch/index.vue
@@ -115,6 +115,7 @@
               <a v-if="canOnlineSign(row)" @click="handleOnlineSign(row)">
                 {{ row.status === "completed" ? "查看签署" : "在线签订" }}
               </a>
+              <a v-if="canUploadSigned(row)" @click="handleUploadSigned(row)">上传已签署版本</a>
               <a v-if="canMockFinishSign(row)" @click="handleMockFinishSign(row)">测试签署完成</a>
               <a v-if="canCollect(row)" @click="handleMockCollect(row)">测试采集</a>
               <a v-if="canArchive(row)" @click="handleArchive(row)">测试归档</a>
@@ -142,6 +143,7 @@
 
     <ContractPartyPlaceholderModal ref="contractModalRef" @save="handleModalSave" />
     <MixedSignModal ref="mixedSignModalRef" @business-updated="handleSignBusinessUpdated" />
+    <UploadSignedModal ref="uploadSignedModalRef" @done="handleSignBusinessUpdated" />
   </section>
 </template>
 
@@ -156,6 +158,7 @@ import {
 import { Input, message, Modal } from "ant-design-vue";
 import ContractPartyPlaceholderModal from "./components/ContractPartyPlaceholderModal.vue";
 import MixedSignModal from "./components/mixedSignModal.vue";
+import UploadSignedModal from "./components/UploadSignedModal.vue";
 import { getContractTypeSimpleLabel } from "./contractLaunchOptions.js";
 import {
   archiveLaunch,
@@ -194,6 +197,7 @@ const tableRef = ref(null);
 const toolbarRef = ref(null);
 const contractModalRef = ref(null);
 const mixedSignModalRef = ref(null);
+const uploadSignedModalRef = ref(null);
 
 const total = ref(0);
 const loading = ref(false);
@@ -307,6 +311,10 @@ function canMockFinishSign(row) {
   return ["pending_sign", "signing"].includes(row.status);
 }
 
+function canUploadSigned(row) {
+  return ["pending_sign", "signing"].includes(row.status);
+}
+
 function canCollect(row) {
   return row.status === "pending_collect";
 }
@@ -514,6 +522,10 @@ function handleMockFinishSign(row) {
   });
 }
 
+function handleUploadSigned(row) {
+  uploadSignedModalRef.value?.showModal(row);
+}
+
 function handleOnlineSign(row) {
   getLaunchDetail(row.id).then((res) => {
     if (!isSuccessResponse(res) || !getDataResult(res)) {
diff --git a/src/views/seal/mixedSignModal.vue b/src/views/seal/mixedSignModal.vue
index 77fb198..4ea5e35 100644
--- a/src/views/seal/mixedSignModal.vue
+++ b/src/views/seal/mixedSignModal.vue
@@ -45,11 +45,7 @@
                   <strong>{{ item.value }}</strong>
                 </div>
               </div>
-              <p class="upload-mode-hint" style="margin-top: 12px">
-                当前仅保留
-                <strong>预盖章模式</strong
-                >，先上传合同，再拖拽印章到签署位置即可。
-              </p>
+              
             </div>
           </div>