diff --git a/packages/editor/src/components/CodeBlockEditor.vue b/packages/editor/src/components/CodeBlockEditor.vue
index f3f936ee..b69940d4 100644
--- a/packages/editor/src/components/CodeBlockEditor.vue
+++ b/packages/editor/src/components/CodeBlockEditor.vue
@@ -6,6 +6,7 @@
     v-model:height="codeBlockEditorHeight"
     :body-style="{ padding: '0 16px' }"
     :title="content.name ? `${disabled ? '查看' : '编辑'}${content.name}` : '新增代码'"
+    :framework-width="frameworkWidth"
     :position="boxPosition"
     :before-close="beforeClose"
   >
@@ -207,6 +208,7 @@ const closedHandler = () => {
 
 const parentFloating = inject<Ref<HTMLDivElement | null>>('parentFloating', ref(null));
 const { boxPosition, calcBoxPosition } = useNextFloatBoxPosition(uiService, parentFloating);
+const frameworkWidth = computed(() => uiService.get('frameworkRect')?.width || 0);
 
 watch(boxVisible, (visible) => {
   nextTick(() => {
diff --git a/packages/editor/src/components/FloatingBox.vue b/packages/editor/src/components/FloatingBox.vue
index 2fdf00b4..da0cbbc3 100644
--- a/packages/editor/src/components/FloatingBox.vue
+++ b/packages/editor/src/components/FloatingBox.vue
@@ -30,7 +30,6 @@ import VanillaMoveable from 'moveable';
 import { TMagicButton, useZIndex } from '@tmagic/design';
 
 import MIcon from '@editor/components/Icon.vue';
-import { useServices } from '@editor/hooks/use-services';
 
 interface Position {
   left: number;
@@ -46,11 +45,17 @@ const props = withDefaults(
     position?: Position;
     title?: string;
     bodyStyle?: CSSProperties;
+    /** 浮窗初始样式，会与内部计算样式合并，外部传入优先 */
+    initialStyle?: CSSProperties;
+    /** 用于约束浮窗 left 的容器宽度，传入时按宽度收敛 left，避免超出右边界；默认取视窗宽度 */
+    frameworkWidth?: number;
     beforeClose?: (_done: (_cancel?: boolean) => void) => void;
   }>(),
   {
     title: '',
     position: () => ({ left: 0, top: 0 }),
+    initialStyle: () => ({}),
+    frameworkWidth: 0,
   },
 );
 
@@ -73,12 +78,11 @@ const bodyHeight = computed(() => {
   return 'auto';
 });
 
-const { uiService } = useServices();
-const frameworkWidth = computed(() => uiService.get('frameworkRect').width || 0);
 const style = computed(() => {
   let { left } = props.position;
-  if (width.value) {
-    left = left + width.value > frameworkWidth.value ? frameworkWidth.value - width.value : left;
+  const frameworkWidth = props.frameworkWidth || globalThis.window?.innerWidth || 0;
+  if (width.value && frameworkWidth) {
+    left = left + width.value > frameworkWidth ? frameworkWidth - width.value : left;
   }
 
   return {
@@ -86,6 +90,7 @@ const style = computed(() => {
     top: `${props.position.top}px`,
     width: width.value ? `${width.value}px` : 'auto',
     height: height.value ? `${height.value}px` : 'auto',
+    ...props.initialStyle,
   };
 });
 
diff --git a/packages/editor/src/fields/DataSourceFields.vue b/packages/editor/src/fields/DataSourceFields.vue
index c5e64cb2..e904e45e 100644
--- a/packages/editor/src/fields/DataSourceFields.vue
+++ b/packages/editor/src/fields/DataSourceFields.vue
@@ -13,6 +13,7 @@
       v-model:width="width"
       v-model:height="editorHeight"
       :title="fieldTitle"
+      :framework-width="frameworkWidth"
       :position="boxPosition"
     >
       <template #body>
@@ -34,6 +35,7 @@
       v-model:width="width"
       v-model:height="editorHeight"
       title="快速添加数据定义"
+      :framework-width="frameworkWidth"
       :position="boxPosition"
     >
       <template #body>
@@ -360,6 +362,7 @@ const { height: editorHeight } = useEditorContentHeight();
 
 const parentFloating = inject<Ref<HTMLDivElement | null>>('parentFloating', ref(null));
 const { boxPosition, calcBoxPosition } = useNextFloatBoxPosition(uiService, parentFloating);
+const frameworkWidth = computed(() => uiService.get('frameworkRect')?.width || 0);
 
 /**
  * 由 DataSourceConfigPanel 注入：打开数据源详情后需要直接打开的字段路径（字段名数组）。
diff --git a/packages/editor/src/fields/DataSourceMocks.vue b/packages/editor/src/fields/DataSourceMocks.vue
index 9923e0b4..ad64819e 100644
--- a/packages/editor/src/fields/DataSourceMocks.vue
+++ b/packages/editor/src/fields/DataSourceMocks.vue
@@ -12,6 +12,7 @@
       v-model:width="width"
       v-model:height="editorHeight"
       :title="drawerTitle"
+      :framework-width="frameworkWidth"
       :position="boxPosition"
     >
       <template #body>
@@ -255,4 +256,5 @@ const addDialogVisible = defineModel<boolean>('visible', { default: false });
 const { height: editorHeight } = useEditorContentHeight();
 const parentFloating = inject<Ref<HTMLDivElement | null>>('parentFloating', ref(null));
 const { boxPosition, calcBoxPosition } = useNextFloatBoxPosition(uiService, parentFloating);
+const frameworkWidth = computed(() => uiService.get('frameworkRect')?.width || 0);
 </script>
diff --git a/packages/editor/src/layouts/sidebar/Sidebar.vue b/packages/editor/src/layouts/sidebar/Sidebar.vue
index 0c94595f..19a6a5ac 100644
--- a/packages/editor/src/layouts/sidebar/Sidebar.vue
+++ b/packages/editor/src/layouts/sidebar/Sidebar.vue
@@ -132,6 +132,7 @@
         v-model:height="columnLeftHeight"
         :width="columnLeftWidth"
         :title="config.text"
+        :framework-width="frameworkWidth"
         :position="{
           left: floatBoxStates[config.$key].left,
           top: floatBoxStates[config.$key].top,
@@ -221,6 +222,7 @@ const taskLength = computed(() => depService.get('taskLength'));
 const tipsBarVisible = ref(true);
 
 const columnLeftWidth = computed(() => uiService.get('columnWidth')[ColumnLayout.LEFT]);
+const frameworkWidth = computed(() => uiService.get('frameworkRect')?.width || 0);
 const { height: editorContentHeight } = useEditorContentHeight();
 const columnLeftHeight = ref(0);
 
diff --git a/packages/editor/src/layouts/sidebar/data-source/DataSourceConfigPanel.vue b/packages/editor/src/layouts/sidebar/data-source/DataSourceConfigPanel.vue
index 2b1636d3..db5a2ff2 100644
--- a/packages/editor/src/layouts/sidebar/data-source/DataSourceConfigPanel.vue
+++ b/packages/editor/src/layouts/sidebar/data-source/DataSourceConfigPanel.vue
@@ -5,6 +5,7 @@
     v-model:width="width"
     v-model:height="editorHeight"
     :title="title"
+    :framework-width="frameworkWidth"
     :position="boxPosition"
   >
     <template #body>
@@ -66,6 +67,7 @@ const { height: editorHeight } = useEditorContentHeight();
 
 const parentFloating = inject<Ref<HTMLDivElement | null>>('parentFloating', ref(null));
 const { boxPosition, calcBoxPosition } = useNextFloatBoxPosition(uiService, parentFloating);
+const frameworkWidth = computed(() => uiService.get('frameworkRect')?.width || 0);
 
 /** 供「方法定义」tab 内的字段消费，用于打开数据源详情后自动打开指定方法 */
 provide(
diff --git a/packages/editor/src/layouts/workspace/viewer/NodeListMenu.vue b/packages/editor/src/layouts/workspace/viewer/NodeListMenu.vue
index 21df53b7..0b080f52 100644
--- a/packages/editor/src/layouts/workspace/viewer/NodeListMenu.vue
+++ b/packages/editor/src/layouts/workspace/viewer/NodeListMenu.vue
@@ -8,6 +8,7 @@
     ref="box"
     v-model:visible="visible"
     title="当前位置下的组件"
+    :framework-width="frameworkWidth"
     :position="menuPosition"
   >
     <template #body>
@@ -36,7 +37,9 @@ import { useNodeStatus } from '@editor/layouts/sidebar/layer/use-node-status';
 import type { TreeNodeData } from '@editor/type';
 
 const services = useServices();
-const { editorService } = services;
+const { editorService, uiService } = services;
+
+const frameworkWidth = computed(() => uiService.get('frameworkRect')?.width || 0);
 
 const visible = ref(false);
 const buttonVisible = ref(false);
diff --git a/packages/editor/tests/unit/components/FloatingBox.spec.ts b/packages/editor/tests/unit/components/FloatingBox.spec.ts
index 0aa63be6..f864b02b 100644
--- a/packages/editor/tests/unit/components/FloatingBox.spec.ts
+++ b/packages/editor/tests/unit/components/FloatingBox.spec.ts
@@ -64,6 +64,18 @@ const services = {
   },
 };
 
+const rect200: DOMRect = {
+  x: 0,
+  y: 0,
+  width: 200,
+  height: 100,
+  top: 0,
+  left: 0,
+  right: 200,
+  bottom: 100,
+  toJSON: () => '',
+};
+
 describe('FloatingBox.vue', () => {
   beforeEach(() => {
     moveableHandlers.clear();
@@ -157,14 +169,61 @@ describe('FloatingBox.vue', () => {
 
   test('left + width 超过 frameworkWidth 时 left 被收敛', async () => {
     const wrapper = mount(FloatingBox as any, {
-      ...services,
-      props: { visible: true, position: { left: 950, top: 0 }, width: 200 },
+      props: { visible: true, position: { left: 950, top: 0 }, width: 200, frameworkWidth: 1000 },
       attachTo: document.body,
     });
     await new Promise((r) => setTimeout(r, 0));
     await wrapper.vm.$nextTick();
     const box = document.querySelector('.m-editor-float-box') as HTMLElement;
     expect(box).not.toBeNull();
+    // jsdom 中 getBoundingClientRect 返回 0，width 会被重置为 0，故不触发收敛，left 保持原值
+    expect(box.style.left).toBe('950px');
+    wrapper.unmount();
+  });
+
+  test('当实际宽度使 left + width 超过 frameworkWidth 时 left 收敛到右边界内', async () => {
+    const getBoundingClientRectSpy = vi.spyOn(Element.prototype, 'getBoundingClientRect').mockReturnValue(rect200);
+    const wrapper = mount(FloatingBox as any, {
+      props: { visible: true, position: { left: 950, top: 0 }, frameworkWidth: 1000 },
+      attachTo: document.body,
+    });
+    await new Promise((r) => setTimeout(r, 0));
+    await wrapper.vm.$nextTick();
+    const box = document.querySelector('.m-editor-float-box') as HTMLElement;
+    expect(box).not.toBeNull();
+    expect(box.style.left).toBe('800px');
+    getBoundingClientRectSpy.mockRestore();
+    wrapper.unmount();
+  });
+
+  test('未传入 frameworkWidth 时默认按视窗宽度收敛 left', async () => {
+    const getBoundingClientRectSpy = vi.spyOn(Element.prototype, 'getBoundingClientRect').mockReturnValue(rect200);
+    const innerWidthSpy = vi.spyOn(globalThis, 'window', 'get').mockReturnValue({ innerWidth: 300 } as any);
+    const wrapper = mount(FloatingBox as any, {
+      props: { visible: true, position: { left: 250, top: 0 } },
+      attachTo: document.body,
+    });
+    await new Promise((r) => setTimeout(r, 0));
+    await wrapper.vm.$nextTick();
+    const box = document.querySelector('.m-editor-float-box') as HTMLElement;
+    expect(box).not.toBeNull();
+    // 250 + 200 = 450 > 视窗宽度 300，left 收敛为 300 - 200 = 100
+    expect(box.style.left).toBe('100px');
+    getBoundingClientRectSpy.mockRestore();
+    innerWidthSpy.mockRestore();
+    wrapper.unmount();
+  });
+
+  test('传入 initialStyle 时合并到浮窗样式', async () => {
+    const wrapper = mount(FloatingBox as any, {
+      props: { visible: true, initialStyle: { backgroundColor: 'rgb(255, 0, 0)' } },
+      attachTo: document.body,
+    });
+    await new Promise((r) => setTimeout(r, 0));
+    await wrapper.vm.$nextTick();
+    const box = document.querySelector('.m-editor-float-box') as HTMLElement;
+    expect(box).not.toBeNull();
+    expect(box.style.backgroundColor).toBe('rgb(255, 0, 0)');
     wrapper.unmount();
   });
 
diff --git a/packages/editor/tests/unit/layouts/workspace/viewer/NodeListMenu.spec.ts b/packages/editor/tests/unit/layouts/workspace/viewer/NodeListMenu.spec.ts
index 4089fc7b..448a94f3 100644
--- a/packages/editor/tests/unit/layouts/workspace/viewer/NodeListMenu.spec.ts
+++ b/packages/editor/tests/unit/layouts/workspace/viewer/NodeListMenu.spec.ts
@@ -38,10 +38,14 @@ const editorService = {
   select: vi.fn(),
 };
 
+const uiService = {
+  get: vi.fn((k: string) => (k === 'frameworkRect' ? { width: 1000 } : undefined)),
+};
+
 const nodeStatusMap = ref(new Map<string, any>([['p1', { selected: false }]]));
 
 vi.mock('@editor/hooks/use-services', () => ({
-  useServices: () => ({ editorService }),
+  useServices: () => ({ editorService, uiService }),
 }));
 
 vi.mock('@editor/layouts/sidebar/layer/use-node-status', () => ({