diff --git a/web/extension.js b/web/extension.js
index a0e8682..5180b1d 100644
--- a/web/extension.js
+++ b/web/extension.js
@@ -773,7 +773,26 @@ async function loadImageAndDetectMask(node, imageName) {
             
             if (hasMask && minX <= maxX && minY <= maxY) {
                 data.maskBounds = { x: minX, y: minY, width: maxX - minX + 1, height: maxY - minY + 1 };
-                // 使用统一的约束函数计算选区
+                
+                // 检查是否有之前保存的选区坐标
+                const coordsWidget = node.widgets?.find(w => w.name === "region_coords");
+                if (coordsWidget?.value) {
+                    try {
+                        const savedRegion = JSON.parse(coordsWidget.value);
+                        if (savedRegion.x !== undefined && savedRegion.y !== undefined &&
+                            savedRegion.width !== undefined && savedRegion.height !== undefined) {
+                            data.regionX = savedRegion.x;
+                            data.regionY = savedRegion.y;
+                            data.regionWidth = savedRegion.width;
+                            data.regionHeight = savedRegion.height;
+                            nodeImageData.set(node.id, data);
+                            node.setDirtyCanvas(true);
+                            return;
+                        }
+                    } catch (e) {}
+                }
+                
+                // 没有保存的选区，重新计算
                 constrainRegion(data, padding);
             }
             
@@ -1334,6 +1353,11 @@ app.registerExtension({
                     if (origCb) origCb.apply(this, arguments);
                     loadImageAndDetectMask(node, v);
                 };
+                
+                // 刷新节点时：widget 已有值，需要加载图像
+                if (imgW.value) {
+                    setTimeout(() => loadImageAndDetectMask(node, imgW.value), 0);
+                }
             }
             
             // 监听 padding 变化