diff --git a/frontend/src/pages/admin/AnalyticsDashboard.tsx b/frontend/src/pages/admin/AnalyticsDashboard.tsx
index e187f3e..40831a7 100644
--- a/frontend/src/pages/admin/AnalyticsDashboard.tsx
+++ b/frontend/src/pages/admin/AnalyticsDashboard.tsx
@@ -315,17 +315,21 @@ export default function AnalyticsDashboard() {
         },
       },
       legend: { top: 0, type: "scroll" },
-      grid: { left: 48, right: 24, top: 80, bottom: 48 }, // top 加大，避免图例遮挡柱子
+      grid: { left: 48, right: 24, top: 80, bottom: 96 }, // bottom 加大以容纳 X 轴四行标签（名称/规格/序列号/身份证）
       xAxis: {
         type: "category",
         data: chunkDevices.map((d) => d.product_sn),
         axisLabel: {
-          fontSize: 11, interval: 0, color: "#666", lineHeight: 14,
-          // 🔧 标签改为「产品名称(截断) + 尾号4位」，避免 16 位身份证重叠
+          fontSize: 11, interval: 0, color: "#666", lineHeight: 15, width: 120, overflow: 'break' as const,
+          // 🔧 X 轴四行展示（与轨迹流转一致）：产品名称 / 规格型号 / 业务序列号(若有) / 身份证
           formatter: (sn: string) => {
             const dev = chunkDevices.find((d) => d.product_sn === sn);
-            const name = dev?.material_name ? dev.material_name.slice(0, 6) : sn.slice(0, 6);
-            return `${name} ${sn.slice(-4)}`;
+            if (!dev) return sn;
+            const lines = [dev.material_name || "—"];
+            if (dev.spec_model) lines.push(dev.spec_model);
+            if (dev.external_serial) lines.push(dev.external_serial);
+            lines.push(dev.product_sn);
+            return lines.join("\n");
           },
         },
       },