diff --git a/web/app/(console)/agent-run-logs/_components/detail.tsx b/web/app/(console)/agent-run-logs/_components/detail.tsx
index 1105bf3..8ddc54a 100644
--- a/web/app/(console)/agent-run-logs/_components/detail.tsx
+++ b/web/app/(console)/agent-run-logs/_components/detail.tsx
@@ -5,6 +5,7 @@ import { BotMessageSquareIcon, WorkflowIcon } from "lucide-react"
 import { toast } from "sonner"
 
 import { ImMessageHTML } from "@/components/im-message-html"
+import { JsonTreeViewer } from "@/components/json-tree-viewer"
 import { ProjectDialog } from "@/components/project-dialog"
 import { Button } from "@/components/ui/button"
 import { fetchAgentRunLog, type AgentRunLog } from "@/lib/api/admin"
@@ -149,21 +150,15 @@ export function AgentRunLogDetailDialog({
             ]}
           />
 
-          <TextBlock
+          <JsonBlock
             title="动态工具选择"
-            value={
-              activeToolSearchTrace
-                ? JSON.stringify(activeToolSearchTrace, null, 2)
-                : activeLog.toolSearchTrace
-            }
+            jsonValue={activeToolSearchTrace}
+            fallbackValue={activeLog.toolSearchTrace}
           />
-          <TextBlock
+          <JsonBlock
             title="Graph Tool 调用"
-            value={
-              activeGraphToolTrace
-                ? JSON.stringify(activeGraphToolTrace, null, 2)
-                : activeLog.graphToolTrace
-            }
+            jsonValue={activeGraphToolTrace}
+            fallbackValue={activeLog.graphToolTrace}
           />
           <TextBlock
             icon={<BotMessageSquareIcon className="size-4" />}
@@ -177,13 +172,10 @@ export function AgentRunLogDetailDialog({
             value={activeLog.replyText}
           />
           <TextBlock title="错误信息" value={activeLog.errorMessage} tone="danger" />
-          <TextBlock
+          <JsonBlock
             title="链路 Trace"
-            value={
-              activeTraceData
-                ? JSON.stringify(activeTraceData, null, 2)
-                : activeLog.traceData
-            }
+            jsonValue={activeTraceData}
+            fallbackValue={activeLog.traceData}
           />
         </>
       ) : (
@@ -283,6 +275,31 @@ function TextBlock({
   )
 }
 
+function JsonBlock({
+  title,
+  jsonValue,
+  fallbackValue,
+}: {
+  title: string
+  jsonValue: unknown
+  fallbackValue?: string
+}) {
+  const normalizedFallback = fallbackValue?.trim() || ""
+
+  return (
+    <div className="rounded-lg border p-4">
+      <div className="text-sm font-medium">{title}</div>
+      {jsonValue ? (
+        <JsonTreeViewer value={jsonValue} className="mt-3" />
+      ) : (
+        <div className="mt-3 select-text whitespace-pre-wrap wrap-break-word text-sm text-muted-foreground">
+          {normalizedFallback || "-"}
+        </div>
+      )}
+    </div>
+  )
+}
+
 function sanitizeRichHTML(value: string) {
   if (typeof window === "undefined") {
     return value
diff --git a/web/components/json-tree-viewer.tsx b/web/components/json-tree-viewer.tsx
new file mode 100644
index 0000000..33b9881
--- /dev/null
+++ b/web/components/json-tree-viewer.tsx
@@ -0,0 +1,67 @@
+"use client"
+
+import type { CSSProperties } from "react"
+import JsonView from "@uiw/react-json-view"
+
+import { cn } from "@/lib/utils"
+
+type JsonTreeViewerProps = {
+  value: unknown
+  emptyText?: string
+  className?: string
+  collapsed?: boolean | number
+}
+
+const viewerTheme = {
+  "--w-rjv-font-family":
+    'ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace',
+  "--w-rjv-background-color": "transparent",
+  "--w-rjv-color": "hsl(var(--foreground))",
+  "--w-rjv-line-color": "hsl(var(--border))",
+  "--w-rjv-arrow-color": "hsl(var(--muted-foreground))",
+  "--w-rjv-info-color": "hsl(var(--muted-foreground))",
+  "--w-rjv-curlybraces-color": "hsl(var(--foreground))",
+  "--w-rjv-brackets-color": "hsl(var(--foreground))",
+  "--w-rjv-colon-color": "hsl(var(--muted-foreground))",
+  "--w-rjv-ellipsis-color": "hsl(var(--muted-foreground))",
+  "--w-rjv-key-string": "hsl(199 89% 58%)",
+  "--w-rjv-type-string-color": "hsl(142 76% 45%)",
+  "--w-rjv-type-int-color": "hsl(262 83% 70%)",
+  "--w-rjv-type-float-color": "hsl(262 83% 70%)",
+  "--w-rjv-type-boolean-color": "hsl(38 92% 50%)",
+  "--w-rjv-type-null-color": "hsl(347 77% 50%)",
+} as CSSProperties
+
+export function JsonTreeViewer({
+  value,
+  emptyText = "暂无数据",
+  className,
+  collapsed = 2,
+}: JsonTreeViewerProps) {
+  if (value == null || value === "") {
+    return (
+      <div
+        className={cn(
+          "rounded-md border bg-muted/20 px-4 py-3 font-mono text-xs text-muted-foreground",
+          className
+        )}
+      >
+        {emptyText}
+      </div>
+    )
+  }
+
+  return (
+    <div className={cn("rounded-md border bg-muted/20 p-3", className)}>
+      <JsonView
+        value={value as Record<string, unknown>}
+        collapsed={collapsed}
+        displayDataTypes={false}
+        displayObjectSize
+        enableClipboard
+        shortenTextAfterLength={120}
+        style={viewerTheme}
+      />
+    </div>
+  )
+}
diff --git a/web/package.json b/web/package.json
index dd356af..b1f5e18 100644
--- a/web/package.json
+++ b/web/package.json
@@ -23,6 +23,7 @@
     "@tiptap/extension-underline": "3.20.2",
     "@tiptap/react": "^3.20.2",
     "@tiptap/starter-kit": "^3.20.2",
+    "@uiw/react-json-view": "2.0.0-alpha.41",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "cmdk": "^1.1.1",
diff --git a/web/pnpm-lock.yaml b/web/pnpm-lock.yaml
index dcf8d53..16bff45 100644
--- a/web/pnpm-lock.yaml
+++ b/web/pnpm-lock.yaml
@@ -47,6 +47,9 @@ importers:
       '@tiptap/starter-kit':
         specifier: ^3.20.2
         version: 3.20.2
+      '@uiw/react-json-view':
+        specifier: 2.0.0-alpha.41
+        version: 2.0.0-alpha.41(@babel/runtime@7.28.6)(react-dom@19.2.3(react@19.2.3))(react@19.2.3)
       class-variance-authority:
         specifier: ^0.7.1
         version: 0.7.1
@@ -1564,6 +1567,13 @@ packages:
     resolution: {integrity: sha512-zm6xx8UT/Xy2oSr2ZXD0pZo7Jx2XsCoID2IUh9YSTFRu7z+WdwYTRk6LhUftm1crwqbuoF6I8zAFeCMw0YjwDg==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
 
+  '@uiw/react-json-view@2.0.0-alpha.41':
+    resolution: {integrity: sha512-botRpQ5AgymYEsqXSdT2/1LefAJEYfMntvdnx1SqhTQCTW9HygeFZXx9inkYqUmiQZ3+0QlZnodjBvwnUfZhVA==}
+    peerDependencies:
+      '@babel/runtime': '>=7.10.0'
+      react: '>=18.0.0'
+      react-dom: '>=18.0.0'
+
   '@unrs/resolver-binding-android-arm-eabi@1.11.1':
     resolution: {integrity: sha512-ppLRUgHVaGRWUx0R0Ut06Mjo9gBaBkg3v/8AxusGLhsIotbBLuRk51rAzqLC8gq6NyyAojEXglNjzf6R948DNw==}
     cpu: [arm]
@@ -5726,6 +5736,12 @@ snapshots:
       '@typescript-eslint/types': 8.57.0
       eslint-visitor-keys: 5.0.1
 
+  '@uiw/react-json-view@2.0.0-alpha.41(@babel/runtime@7.28.6)(react-dom@19.2.3(react@19.2.3))(react@19.2.3)':
+    dependencies:
+      '@babel/runtime': 7.28.6
+      react: 19.2.3
+      react-dom: 19.2.3(react@19.2.3)
+
   '@unrs/resolver-binding-android-arm-eabi@1.11.1':
     optional: true