diff --git a/desc/inference/inference.api b/desc/inference/inference.api
index 392a39e4..b80d31aa 100644
--- a/desc/inference/inference.api
+++ b/desc/inference/inference.api
@@ -38,9 +38,9 @@ type (
           TaskName string `form:"taskName"`
           TaskDesc string `form:"taskDesc"`
           ModelType string `form:"modelType"`
-          Instances []*DeployInstance `form:"instances"`
+          InstanceIds []int64 `form:"instanceIds"`
           Strategy string `form:"strategy,,optional"`
-          StaticWeightMap map[string]int32 `form:"staticWeightMap,optional"`
+          StaticWeightMap map[string]map[string]int32 `form:"staticWeightMap,optional"`
           Replica     int32     `form:"replicas,optional"`
      }
 
diff --git a/internal/types/types.go b/internal/types/types.go
index 6d7ef5c6..2e72d660 100644
--- a/internal/types/types.go
+++ b/internal/types/types.go
@@ -5935,13 +5935,13 @@ type ModelNamesResp struct {
 }
 
 type ImageInferenceReq struct {
-	TaskName        string            `form:"taskName"`
-	TaskDesc        string            `form:"taskDesc"`
-	ModelType       string            `form:"modelType"`
-	Instances       []*DeployInstance `form:"instances"`
-	Strategy        string            `form:"strategy,,optional"`
-	StaticWeightMap map[string]int32  `form:"staticWeightMap,optional"`
-	Replica         int32             `form:"replicas,optional"`
+	TaskName        string                      `form:"taskName"`
+	TaskDesc        string                      `form:"taskDesc"`
+	ModelType       string                      `form:"modelType"`
+	InstanceIds     []int64                     `form:"instanceIds"`
+	Strategy        string                      `form:"strategy,,optional"`
+	StaticWeightMap map[string]map[string]int32 `form:"staticWeightMap,optional"`
+	Replica         int32                       `form:"replicas,optional"`
 }
 
 type ImageInferenceResp struct {