diff --git a/api/core/tools/builtin_tool/providers/apo_analysis/tools/abnormal_chart.py b/api/core/tools/builtin_tool/providers/apo_analysis/tools/abnormal_chart.py
new file mode 100644
index 0000000000..602fc4fbad
--- /dev/null
+++ b/api/core/tools/builtin_tool/providers/apo_analysis/tools/abnormal_chart.py
@@ -0,0 +1,72 @@
+import json
+from collections.abc import Generator
+from typing import Any, Optional
+
+from core.tools.builtin_tool.tool import BuiltinTool
+from core.tools.entities.tool_entities import ToolInvokeMessage
+
+
+class AbnormalChartTool(BuiltinTool):
+    def _invoke(
+        self,
+        user_id: str,
+        tool_parameters: dict[str, Any],
+        conversation_id: Optional[str] = None,
+        app_id: Optional[str] = None,
+        message_id: Optional[str] = None,
+    ) -> Generator[ToolInvokeMessage, None, None]:
+        result_str = tool_parameters.get('result')
+
+        data = json.loads(result_str)
+        timeseries = data.get('data', {}).get('timeseries', [])
+        unit = data.get('unit', '')
+        filtered = []
+
+        for entry in timeseries:
+            labels = entry.get('labels', {})
+
+            chart = entry.get('chart', {}).get('chartData', {})
+            values = [v for v in chart.values() if v != 0]
+
+            if len(values) == 0:
+                continue
+
+            avg = _get_avg(values)
+            variance = _get_standard_deviation(avg, values)
+
+            threshold = avg + 1 * variance
+            
+            count = 0
+            for _, value in chart.items():
+                if value > threshold:
+                    count += 1
+
+            if count / len(values) >= 0.16:
+                res = {
+                    "chart": chart,
+                    "abnormalCount": count,
+                    "labels": labels,
+                    "avg": avg,
+                    "unit": unit
+                }
+                filtered.append(res)
+                
+        yield self.create_json_message({
+            'type': 'metric',
+            'data': filtered
+        })
+
+        yield self.create_text_message(json.dumps(filtered))
+    
+def _get_avg(values):
+    if not values:
+        return 0
+    return sum(values) / len(values)
+
+def _get_standard_deviation(avg, values):
+    if len(values) == 0:
+        return 0
+    squared_diffs = [(x - avg)**2 for x in values]
+    sum_squared_diffs = sum(squared_diffs)
+    variance = sum_squared_diffs / (len(values))
+    return variance**0.5
\ No newline at end of file
diff --git a/api/core/tools/builtin_tool/providers/apo_analysis/tools/abnormal_chart.yaml b/api/core/tools/builtin_tool/providers/apo_analysis/tools/abnormal_chart.yaml
new file mode 100644
index 0000000000..a35b493d27
--- /dev/null
+++ b/api/core/tools/builtin_tool/providers/apo_analysis/tools/abnormal_chart.yaml
@@ -0,0 +1,25 @@
+identity:
+  name: abnormal charts
+  author: APO
+  label:
+    en_US: Analyze chart abnormal samples.
+    zh_Hans: 分析图表的异常样本
+    pt_BR: Analyze chart abnormal samples.
+description:
+  human:
+    en_US: Analyze chart abnormal samples.
+    zh_Hans: 分析图表的异常样本
+    pt_BR: Analyze chart abnormal samples.
+  llm: Analyze chart abnormal samples.
+parameters:
+  - name: result
+    type: string
+    required: true
+    label:
+      en_US: 指标查询结果
+      zh_Hans: Metrics query result
+    human_description:
+      en_US: 指标查询结果
+      zh_Hans: Metrics query result
+    llm_description: Metrics query result
+    form: llm
\ No newline at end of file