diff --git a/internal/proxy/task_search.go b/internal/proxy/task_search.go
index 793ef2083b..68791f4c57 100644
--- a/internal/proxy/task_search.go
+++ b/internal/proxy/task_search.go
@@ -2,6 +2,7 @@ package proxy
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"math"
 	"regexp"
@@ -42,6 +43,8 @@ const (
 	// a second query request will be initiated to retrieve output fields data.
 	// In this case, the first search will not return any output field from QueryNodes.
 	requeryThreshold = 0.5 * 1024 * 1024
+	radiusKey        = "radius"
+	rangeFilterKey   = "range_filter"
 )
 
 type searchTask struct {
@@ -178,6 +181,11 @@ func parseSearchInfo(searchParamsPair []*commonpb.KeyValuePair, schema *schemapb
 		searchParamStr = ""
 	}
 
+	err = checkRangeSearchParams(searchParamStr, metricType)
+	if err != nil {
+		return nil, 0, err
+	}
+
 	// 5. parse group by field
 	groupByFieldName, err := funcutil.GetAttrByKeyFromRepeatedKV(GroupByFieldKey, searchParamsPair)
 	if err != nil {
@@ -910,6 +918,57 @@ func reduceSearchResultData(ctx context.Context, subSearchResultData []*schemapb
 	return ret, nil
 }
 
+type rangeSearchParams struct {
+	radius      float64
+	rangeFilter float64
+}
+
+func checkRangeSearchParams(str string, metricType string) error {
+	if len(str) == 0 {
+		// no search params, no need to check
+		return nil
+	}
+	var data map[string]*json.RawMessage
+	err := json.Unmarshal([]byte(str), &data)
+	if err != nil {
+		log.Info("json Unmarshal fail when checkRangeSearchParams")
+		return err
+	}
+	_, ok := data[radiusKey]
+	// will not do range search, no need to check
+	if !ok {
+		return nil
+	}
+	var params rangeSearchParams
+	err = json.Unmarshal(*data[radiusKey], &params.radius)
+	if err != nil {
+		return merr.WrapErrParameterInvalidMsg("must pass numpy type for radius")
+	}
+
+	_, ok = data[rangeFilterKey]
+	// not pass range_filter, no need to check
+	if !ok {
+		return nil
+	}
+	err = json.Unmarshal(*data[rangeFilterKey], &params.rangeFilter)
+	if err != nil {
+		return merr.WrapErrParameterInvalidMsg("must pass numpy type for range_filter")
+	}
+
+	if metric.PositivelyRelated(metricType) {
+		if params.radius >= params.rangeFilter {
+			msg := fmt.Sprintf("range_filter must be greater than radius for IP/COSINE, range_filter:%f, radius:%f", params.rangeFilter, params.radius)
+			return merr.WrapErrParameterInvalidMsg(msg)
+		}
+	} else {
+		if params.radius <= params.rangeFilter {
+			msg := fmt.Sprintf("range_filter must be less than radius for L2/HAMMING/JACCARD, range_filter:%f, radius:%f", params.rangeFilter, params.radius)
+			return merr.WrapErrParameterInvalidMsg(msg)
+		}
+	}
+	return nil
+}
+
 func (t *searchTask) TraceCtx() context.Context {
 	return t.ctx
 }
diff --git a/internal/proxy/task_search_test.go b/internal/proxy/task_search_test.go
index d928a4eea6..f3c671b704 100644
--- a/internal/proxy/task_search_test.go
+++ b/internal/proxy/task_search_test.go
@@ -112,6 +112,56 @@ func getBaseSearchParams() []*commonpb.KeyValuePair {
 	}
 }
 
+func getBaseParamsForRangeSearchL2() []*commonpb.KeyValuePair {
+	return []*commonpb.KeyValuePair{
+		{
+			Key:   AnnsFieldKey,
+			Value: testFloatVecField,
+		},
+		{
+			Key:   TopKKey,
+			Value: "10",
+		},
+		{
+			Key:   common.MetricTypeKey,
+			Value: metric.L2,
+		},
+		{
+			Key:   RoundDecimalKey,
+			Value: "-1",
+		},
+		{
+			Key:   IgnoreGrowingKey,
+			Value: "false",
+		},
+	}
+}
+
+func getBaseParamsForRangeSearchIP() []*commonpb.KeyValuePair {
+	return []*commonpb.KeyValuePair{
+		{
+			Key:   AnnsFieldKey,
+			Value: testFloatVecField,
+		},
+		{
+			Key:   TopKKey,
+			Value: "10",
+		},
+		{
+			Key:   common.MetricTypeKey,
+			Value: metric.IP,
+		},
+		{
+			Key:   RoundDecimalKey,
+			Value: "-1",
+		},
+		{
+			Key:   IgnoreGrowingKey,
+			Value: "false",
+		},
+	}
+}
+
 func getValidSearchParams() []*commonpb.KeyValuePair {
 	return []*commonpb.KeyValuePair{
 		{
@@ -1954,6 +2004,101 @@ func TestTaskSearch_parseQueryInfo(t *testing.T) {
 			})
 		}
 	})
+	t.Run("check range search params", func(t *testing.T) {
+		normalParam := getValidSearchParams()
+
+		normalParamWithNoFilter := getBaseParamsForRangeSearchL2()
+		normalParamWithNoFilter = append(normalParamWithNoFilter, &commonpb.KeyValuePair{
+			Key:   SearchParamsKey,
+			Value: `{"nprobe": 10, "radius": 10}`,
+		})
+
+		normalParamForIP := getBaseParamsForRangeSearchIP()
+		normalParamForIP = append(normalParamForIP, &commonpb.KeyValuePair{
+			Key:   SearchParamsKey,
+			Value: `{"nprobe": 10, "radius": 10, "range_filter": 20}`,
+		})
+
+		normalParamForL2 := getBaseParamsForRangeSearchL2()
+		normalParamForL2 = append(normalParamForL2, &commonpb.KeyValuePair{
+			Key:   SearchParamsKey,
+			Value: `{"nprobe": 10, "radius": 20, "range_filter": 10}`,
+		})
+
+		abnormalParamForIP := getBaseParamsForRangeSearchIP()
+		abnormalParamForIP = append(abnormalParamForIP, &commonpb.KeyValuePair{
+			Key:   SearchParamsKey,
+			Value: `{"nprobe": 10, "radius": 20, "range_filter": 10}`,
+		})
+
+		abnormalParamForL2 := getBaseParamsForRangeSearchL2()
+		abnormalParamForL2 = append(abnormalParamForL2, &commonpb.KeyValuePair{
+			Key:   SearchParamsKey,
+			Value: `{"nprobe": 10, "radius": 10, "range_filter": 20}`,
+		})
+
+		wrongTypeRadius := getBaseParamsForRangeSearchIP()
+		wrongTypeRadius = append(wrongTypeRadius, &commonpb.KeyValuePair{
+			Key:   SearchParamsKey,
+			Value: `{"nprobe": 10, "radius": "ab"}`,
+		})
+
+		wrongTypeFilter := getBaseParamsForRangeSearchIP()
+		wrongTypeFilter = append(wrongTypeFilter, &commonpb.KeyValuePair{
+			Key:   SearchParamsKey,
+			Value: `{"nprobe": 10, "radius": 10, "range_filter": "20"}`,
+		})
+
+		tests := []struct {
+			description string
+			validParams []*commonpb.KeyValuePair
+		}{
+			{"normalParam", normalParam},
+			{"normalParamWithNoFilter", normalParamWithNoFilter},
+			{"normalParamForIP", normalParamForIP},
+			{"normalParamForL2", normalParamForL2},
+		}
+
+		for _, test := range tests {
+			t.Run(test.description, func(t *testing.T) {
+				info, _, err := parseSearchInfo(test.validParams, nil)
+				assert.NoError(t, err)
+				assert.NotNil(t, info)
+			})
+		}
+
+		tests = []struct {
+			description string
+			validParams []*commonpb.KeyValuePair
+		}{
+			{"abnormalParamForIP", abnormalParamForIP},
+			{"abnormalParamForL2", abnormalParamForL2},
+		}
+
+		for _, test := range tests {
+			t.Run(test.description, func(t *testing.T) {
+				info, _, err := parseSearchInfo(test.validParams, nil)
+				assert.ErrorIs(t, err, merr.ErrParameterInvalid)
+				assert.Nil(t, info)
+			})
+		}
+
+		tests = []struct {
+			description string
+			validParams []*commonpb.KeyValuePair
+		}{
+			{"wrongTypeRadius", wrongTypeRadius},
+			{"wrongTypeFilter", wrongTypeFilter},
+		}
+
+		for _, test := range tests {
+			t.Run(test.description, func(t *testing.T) {
+				info, _, err := parseSearchInfo(test.validParams, nil)
+				assert.ErrorIs(t, err, merr.ErrParameterInvalid)
+				assert.Nil(t, info)
+			})
+		}
+	})
 }
 
 func getSearchResultData(nq, topk int64) *schemapb.SearchResultData {
diff --git a/internal/querynodev2/delegator/delegator.go b/internal/querynodev2/delegator/delegator.go
index 00c35c720f..7c99b268d8 100644
--- a/internal/querynodev2/delegator/delegator.go
+++ b/internal/querynodev2/delegator/delegator.go
@@ -209,7 +209,6 @@ func (sd *shardDelegator) search(ctx context.Context, req *querypb.SearchRequest
 		log.Warn("Search organizeSubTask failed", zap.Error(err))
 		return nil, err
 	}
-
 	results, err := executeSubTasks(ctx, tasks, func(ctx context.Context, req *querypb.SearchRequest, worker cluster.Worker) (*internalpb.SearchResults, error) {
 		return worker.SearchSegments(ctx, req)
 	}, "Search", log)