diff --git a/resources/catalog.json b/resources/catalog.json
index 6e2bb85..5177061 100644
--- a/resources/catalog.json
+++ b/resources/catalog.json
@@ -67146,42 +67146,16 @@
             "rpa_str"
           ]
         },
-        {
-          "key": "action",
-          "label": "action",
-          "widget": "region",
-          "type": "object",
-          "displayType": "getScreenShot",
-          "required": false,
-          "defaultValue": "",
-          "placeholder": "{\"x\":0,\"y\":0,\"width\":100,\"height\":50}",
-          "description": "区域坐标 JSON；点右侧「屏幕框选」在屏幕上框选生成",
-          "advanced": false,
-          "valueTypes": []
-        },
         {
           "key": "position",
-          "label": "position",
+          "label": "截图区域",
           "widget": "region",
           "type": "object",
           "displayType": "screenShotValue",
           "required": false,
           "defaultValue": "",
           "placeholder": "{\"x\":0,\"y\":0,\"width\":100,\"height\":50}",
-          "description": "区域坐标 JSON；点右侧「屏幕框选」在屏幕上框选生成",
-          "advanced": false,
-          "valueTypes": []
-        },
-        {
-          "key": "position_img",
-          "label": "position_img",
-          "widget": "region",
-          "type": "object",
-          "displayType": "screenShotValue",
-          "required": false,
-          "defaultValue": "",
-          "placeholder": "{\"x\":0,\"y\":0,\"width\":100,\"height\":50}",
-          "description": "区域坐标 JSON；点右侧「屏幕框选」在屏幕上框选生成",
+          "description": "截图范围为「框选区域」时生效：点右侧「屏幕框选」在屏幕上框选生成区域坐标",
           "advanced": false,
           "valueTypes": []
         },
diff --git a/src/main/capabilities/vision.ts b/src/main/capabilities/vision.ts
index dd53bf9..ad32bc7 100644
--- a/src/main/capabilities/vision.ts
+++ b/src/main/capabilities/vision.ts
@@ -212,8 +212,8 @@ register("Image_Screenshot", async (ctx, node, args) => {
   if (range === "2") {
     const regionRaw = text(args, ["position", "action", "position_img"]);
     if (!regionRaw.trim()) {
-      throw new RuntimeError("validation_error", "截图范围为「框选区域」时，position 需填写区域 JSON", {
-        recommendation: '在 position 填写 {"x":0,"y":0,"width":100,"height":80} 或 [x, y, width, height]，或将截图范围改回「整个屏幕」'
+      throw new RuntimeError("validation_error", "截图范围为「框选区域」时，截图区域需填写区域 JSON", {
+        recommendation: '在「截图区域」点屏幕框选，或填写 {"x":0,"y":0,"width":100,"height":80}，或将截图范围改回「整个屏幕」'
       });
     }
     if (screenOrigin) {
diff --git a/src/renderer/src/validation/flowValidation.ts b/src/renderer/src/validation/flowValidation.ts
index 29bc6bb..26b9195 100644
--- a/src/renderer/src/validation/flowValidation.ts
+++ b/src/renderer/src/validation/flowValidation.ts
@@ -29,6 +29,8 @@ export function fieldIsActive(componentId: string, key: string, values: Record<s
     }
   }
   if (componentId === "System_ScreenSaverShowV1" && key === "password") return truthy(values.set_password);
+  // Image_Screenshot: 区域坐标仅截图范围为「框选区域」时显示
+  if (componentId === "Image_Screenshot" && key === "position") return String(values.shotRange ?? "1") === "2";
   // Window_*_v1 series: conditional fields based on get_type mode
   if (/^Window_.*_v1$/.test(componentId) || componentId === "Window_WindowExists" || componentId === "Window_WaitWindow") {
     const gt = String(values.get_type ?? "");