diff --git a/CHANGELOG.md b/CHANGELOG.md
index 582739071eabd9930ce571b78fdba11c044f191a..9d5f0faaef5ec77f5b297fc55fd04f383bc7a389 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@
 
 ## [Unreleased]
 
+### Changed
+
+- 甘特部件滑块左右拖拽为负数时禁止移动滑块，移动滑块只能通过拖动中间元素实现
+
 ## [0.7.41-alpha.11] - 2025-07-11
 
 ### Added
diff --git a/src/control/gantt/gantt.tsx b/src/control/gantt/gantt.tsx
index 269ef68f04b26eabcb0507d5926938a6f629842b..9453b23a55e79bc7a7160479a7bdde32640ea4a1 100644
--- a/src/control/gantt/gantt.tsx
+++ b/src/control/gantt/gantt.tsx
@@ -698,6 +698,7 @@ export const GanttControl = defineComponent({
       return (
         <x-gantt-slider
           allow-link={false}
+          resize-mode='dragonly'
           move={c.state.sliderDraggable}
           resize-left={c.state.sliderDraggable}
           resize-right={c.state.sliderDraggable}