diff --git a/internal/core/src/indexbuilder/init_c.cpp b/internal/core/src/indexbuilder/init_c.cpp
index 42ef166363..7753005aed 100644
--- a/internal/core/src/indexbuilder/init_c.cpp
+++ b/internal/core/src/indexbuilder/init_c.cpp
@@ -31,4 +31,4 @@ IndexBuilderSetSimdType(const char* value) {
 void
 IndexBuilderInitGPU(const int32_t gpu_id, const int32_t res_num) {
     milvus::config::KnowhereInitGPU(gpu_id, res_num);
-}
\ No newline at end of file
+}
diff --git a/internal/proxy/task_insert.go b/internal/proxy/task_insert.go
index 05d527bc1d..3d6c6d1851 100644
--- a/internal/proxy/task_insert.go
+++ b/internal/proxy/task_insert.go
@@ -82,6 +82,9 @@ func (it *insertTask) OnEnqueue() error {
 }
 
 func (it *insertTask) checkVectorFieldData() error {
+	// error won't happen here.
+	helper, _ := typeutil.CreateSchemaHelper(it.schema)
+
 	fields := it.insertMsg.GetFieldsData()
 	for _, field := range fields {
 		if field.GetType() != schemapb.DataType_FloatVector {
@@ -90,14 +93,21 @@ func (it *insertTask) checkVectorFieldData() error {
 
 		vectorField := field.GetVectors()
 		if vectorField == nil || vectorField.GetFloatVector() == nil {
-			log.Error("float vector field is illegal, array type mismatch", zap.String("field name", field.GetFieldName()))
 			return fmt.Errorf("float vector field '%v' is illegal, array type mismatch", field.GetFieldName())
 		}
 
+		// error won't happen here.
+		f, _ := helper.GetFieldFromName(field.GetFieldName())
+		dim, _ := typeutil.GetDim(f)
+
 		floatArray := vectorField.GetFloatVector()
-		err := typeutil.VerifyFloats32(floatArray.GetData())
-		if err != nil {
-			log.Error("float vector field data is illegal", zap.String("field name", field.GetFieldName()), zap.Error(err))
+
+		// TODO: `NumRows` passed by client may be not trustable.
+		if uint64(len(floatArray.GetData())) != uint64(dim)*it.insertMsg.GetNumRows() {
+			return fmt.Errorf("length of inserted vector (%d) not match dim (%d)", len(floatArray.GetData()), dim)
+		}
+
+		if err := typeutil.VerifyFloats32(floatArray.GetData()); err != nil {
 			return fmt.Errorf("float vector field data is illegal, error: %w", err)
 		}
 	}
diff --git a/internal/proxy/task_insert_test.go b/internal/proxy/task_insert_test.go
index 91f96f73a2..2099ab606a 100644
--- a/internal/proxy/task_insert_test.go
+++ b/internal/proxy/task_insert_test.go
@@ -2,6 +2,7 @@ package proxy
 
 import (
 	"math"
+	"strconv"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -245,6 +246,7 @@ func TestInsertTask_CheckVectorFieldData(t *testing.T) {
 					IsPrimaryKey: false,
 					AutoID:       false,
 					DataType:     schemapb.DataType_FloatVector,
+					TypeParams:   []*commonpb.KeyValuePair{{Key: "dim", Value: strconv.Itoa(dim)}},
 				},
 			},
 		},
@@ -300,4 +302,11 @@ func TestInsertTask_CheckVectorFieldData(t *testing.T) {
 	}
 	err = task.checkVectorFieldData()
 	assert.Error(t, err)
+
+	// vector dim not match
+	task.insertMsg.FieldsData = []*schemapb.FieldData{
+		newFloatVectorFieldData(fieldName, numRows, dim+1),
+	}
+	err = task.checkVectorFieldData()
+	assert.Error(t, err)
 }