diff --git a/algorithm/kapacity/metric/query.py b/algorithm/kapacity/metric/query.py
index 0758ad2..a36afa4 100644
--- a/algorithm/kapacity/metric/query.py
+++ b/algorithm/kapacity/metric/query.py
@@ -42,8 +42,12 @@ def fetch_metrics(addr, namespace, metric, scale_target, start, end):
                                                        start=start,
                                                        end=end)
     elif metric_type == 'Pods':
-        # TODO: support pods metric type
-        raise RuntimeError('UnsupportedMetricType')
+        return fetch_pod_metric_history(addr=addr,
+                                        namespace=namespace,
+                                        metric=metric,
+                                        scale_target=scale_target,
+                                        start=start,
+                                        end=end)
     elif metric_type == 'Object':
         return fetch_object_metric_history(addr=addr,
                                            namespace=namespace,
@@ -71,19 +75,6 @@ def compute_history_range(history_len):
     return start, end
 
 
-def fetch_replicas_metric_history(addr, namespace, metric, scale_target, start, end):
-    external = metric['external']
-    metric_identifier = build_metric_identifier(external['metric'])
-    name, group_kind = get_obj_name_and_group_kind(scale_target)
-    workload_external = metric_pb.WorkloadExternalQuery(group_kind=group_kind,
-                                                        namespace=namespace,
-                                                        name=name,
-                                                        metric=metric_identifier)
-    query = metric_pb.Query(type=metric_pb.WORKLOAD_EXTERNAL,
-                            workload_external=workload_external)
-    return query_metrics(addr=addr, query=query, start=start, end=end)
-
-
 def fetch_resource_metric_history(addr, namespace, metric, scale_target, start, end):
     resource_name = metric['resource']['name']
     name, group_kind = get_obj_name_and_group_kind(scale_target)
@@ -113,6 +104,19 @@ def fetch_container_resource_metric_history(addr, namespace, metric, scale_targe
     return query_metrics(addr=addr, query=query, start=start, end=end)
 
 
+def fetch_pod_metric_history(addr, namespace, metric, scale_target, start, end):
+    pods = metric['pods']
+    metric_identifier = build_metric_identifier(pods['metric'])
+    name, group_kind = get_obj_name_and_group_kind(scale_target)
+    workload_external = metric_pb.WorkloadExternalQuery(group_kind=group_kind,
+                                                        namespace=namespace,
+                                                        name=name,
+                                                        metric=metric_identifier)
+    query = metric_pb.Query(type=metric_pb.WORKLOAD_EXTERNAL,
+                            workload_external=workload_external)
+    return query_metrics(addr=addr, query=query, start=start, end=end)
+
+
 def fetch_object_metric_history(addr, namespace, metric, start, end):
     obj = metric['object']
     metric_identifier = build_metric_identifier(obj['metric'])
diff --git a/algorithm/kapacity/portrait/horizontal/predictive/main.py b/algorithm/kapacity/portrait/horizontal/predictive/main.py
index d63b79e..ad8804f 100644
--- a/algorithm/kapacity/portrait/horizontal/predictive/main.py
+++ b/algorithm/kapacity/portrait/horizontal/predictive/main.py
@@ -190,13 +190,12 @@ def fetch_metrics_history(args, env, hp_cr):
             metric_ctx.resource_target = compute_resource_target(env.namespace, resource, scale_target)
             metric_ctx.resource_history = resource_history.rename(columns={'value': resource['name']})
         elif i == 1:
-            if metric_type != 'External':
+            if metric_type != 'Pods':
                 raise RuntimeError('MetricTypeError')
-            replica_history = query.fetch_replicas_metric_history(env.metrics_server_addr, env.namespace, metric,
-                                                                  scale_target, start, end)
+            replica_history = query.fetch_metrics(env.metrics_server_addr, env.namespace, metric, scale_target, start, end)
             metric_ctx.replicas_history = replica_history.rename(columns={'value': 'replicas'})
         else:
-            if metric_type != 'Object' and metric_type != 'External':
+            if metric_type != 'Pods' and metric_type != 'Object' and metric_type != 'External':
                 raise RuntimeError('MetricTypeError')
             metric_name = metric['name']
             traffic_history = query.fetch_metrics(env.metrics_server_addr, env.namespace, metric, scale_target, start, end)