diff --git a/core/core-frontend/src/views/chart/components/js/panel/charts/g2/bar/horizontal-bar.ts b/core/core-frontend/src/views/chart/components/js/panel/charts/g2/bar/horizontal-bar.ts
index 164e4f3cec..1e5206c377 100644
--- a/core/core-frontend/src/views/chart/components/js/panel/charts/g2/bar/horizontal-bar.ts
+++ b/core/core-frontend/src/views/chart/components/js/panel/charts/g2/bar/horizontal-bar.ts
@@ -130,22 +130,34 @@ export class HorizontalBar extends Bar {
   protected configYAxis(chart: Chart, options: ViewSpec): ViewSpec {
     const { children } = options
     const xAxis = this.getAxisConfig(chart, 'xAxis')
+    // 让末端刻度标签有空间完整绘制
+    const valueAxisExtra: Record<string, any> = xAxis
+      ? {
+          labelAutoHide: false,
+          labelAutoRotate: false
+        }
+      : {}
     const tmpOptions = {
       ...options,
       children: [
         {
           ...children[0],
-          axis: { ...children[0].axis, y: { ...children[0].axis.y, ...xAxis } }
+          axis: {
+            ...children[0].axis,
+            y: { ...children[0].axis.y, ...xAxis, ...valueAxisExtra }
+          }
         },
         ...children.slice(1)
       ]
     }
     const customStyle = parseJson(chart.customStyle)
     const xAxisAtt = JSON.parse(JSON.stringify(customStyle['xAxis']))
+    // 预留右侧画布空间，避免数值轴最后一个刻度标签被裁剪
+    const appliedOptions = this.reserveValueAxisRightMargin(chart, tmpOptions, xAxisAtt, xAxis)
     if (!xAxisAtt.axisValue?.auto) {
-      const child0 = tmpOptions.children[0]
+      const child0 = appliedOptions.children[0]
       return {
-        ...tmpOptions,
+        ...appliedOptions,
         children: [
           {
             ...child0,
@@ -168,11 +180,82 @@ export class HorizontalBar extends Bar {
               }
             }
           },
-          ...tmpOptions.children.slice(1)
+          ...appliedOptions.children.slice(1)
         ]
       }
     }
-    return tmpOptions
+    return appliedOptions
+  }
+
+  /**
+   * 基于当前数据与数值轴格式化，估算数值轴最长刻度标签的渲染
+   * 并在 ViewSpec 顶层设置足够的 margin，避免末端刻度标签被画布裁剪
+   */
+  private reserveValueAxisRightMargin(
+    chart: Chart,
+    options: ViewSpec,
+    xAxisAtt: any,
+    valueAxisCfg: any
+  ): ViewSpec {
+    if (!valueAxisCfg || !xAxisAtt?.show || xAxisAtt?.axisLabel?.show === false) {
+      return options
+    }
+    const data = (chart.data?.data ?? []) as Array<{ value?: number }>
+    if (!data.length) {
+      return options
+    }
+
+    let maxVal = -Infinity
+    let minVal = Infinity
+    for (const d of data) {
+      const v = Number(d?.value)
+      if (!Number.isFinite(v)) continue
+      if (v > maxVal) maxVal = v
+      if (v < minVal) minVal = v
+    }
+    if (!Number.isFinite(maxVal)) {
+      return options
+    }
+    const axisValue = xAxisAtt?.axisValue
+    if (axisValue && !axisValue.auto) {
+      const fixedMax = Number(axisValue.max)
+      const fixedMin = Number(axisValue.min)
+      if (Number.isFinite(fixedMax)) maxVal = fixedMax
+      if (Number.isFinite(fixedMin)) minVal = fixedMin
+    }
+
+    const formatter = xAxisAtt.axisLabelFormatter
+    const maxStr = String(valueFormatter(maxVal, formatter) ?? maxVal)
+    const minStr = String(valueFormatter(minVal, formatter) ?? minVal)
+    const longestLen = Math.max(maxStr.length, minStr.length)
+
+    // 字符宽估算
+    const fontSize = Number(xAxisAtt?.axisLabel?.fontSize) || 12
+    const labelW = longestLen * fontSize * 0.6
+
+    // 旋转角度取绝对值
+    const rotateDeg = Math.min(90, Math.abs(Number(xAxisAtt?.axisLabel?.rotate) || 0))
+
+    // 默认居中对齐, 末端标签溢出 labelW/2
+    // 锚点变为刻度线处左中点, 标签整体向右下延伸 labelW*cosθ
+    const rightOverflow =
+      rotateDeg === 0 ? labelW / 2 : labelW * Math.cos((rotateDeg * Math.PI) / 180)
+
+    const buffer = 8
+    const marginRight = Math.ceil(rightOverflow + buffer)
+
+    const prev = options as any
+    const next: Record<string, any> = {
+      ...options,
+      marginRight: Math.max(Number(prev.marginRight) || 0, marginRight)
+    }
+
+    if (xAxisAtt?.position === 'top') {
+      const labelH = fontSize * 1.2
+      const topOverflow = rotateDeg === 0 ? labelH : labelW * Math.sin((rotateDeg * Math.PI) / 180)
+      next.marginTop = Math.max(Number(prev.marginTop) || 0, Math.ceil(topOverflow + buffer))
+    }
+    return next as ViewSpec
   }
 
   protected configXAxis(chart: Chart, options: ViewSpec): ViewSpec {
@@ -247,7 +330,7 @@ export class HorizontalBar extends Bar {
         ...label,
         labelAutoHide: true,
         labelAutoRotate: false,
-        labelTransform: `rotate(${axis.axisLabel.rotate || 0})`
+        labelTransform: `rotate(${Math.abs(axis.axisLabel.rotate || 0)})`
       }
       return x
     }