diff --git a/log/filter.go b/log/filter.go
index a5c818f17..bffd9789f 100644
--- a/log/filter.go
+++ b/log/filter.go
@@ -2,11 +2,11 @@ package log
 
 // Filter is a logger filter.
 type Filter struct {
-	logger      Logger
-	filterLevel Level
-	filterKey   map[string]struct{}
-	filterValue map[string]struct{}
-	filterFunc  func(level Level, keyvals ...interface{}) bool
+	logger     Logger
+	level      Level
+	key        map[string]struct{}
+	value      map[string]struct{}
+	filterHook func(level Level, keyvals ...interface{}) bool
 }
 
 // FilterOption is filter option.
@@ -15,36 +15,36 @@ type FilterOption func(*Filter)
 // FilterLevel with filter level
 func FilterLevel(level Level) FilterOption {
 	return func(opts *Filter) {
-		opts.filterLevel = level
+		opts.level = level
 	}
 }
 
-// FilterKey with filter key
-func FilterKey(key ...string) FilterOption {
+// FilterKeys with filter key
+func FilterKeys(key ...string) FilterOption {
 	return func(opts *Filter) {
 		filterKey := make(map[string]struct{})
 		for _, v := range key {
 			filterKey[v] = struct{}{}
 		}
-		opts.filterKey = filterKey
+		opts.key = filterKey
 	}
 }
 
-// FilterValue with filter value
-func FilterValue(value ...string) FilterOption {
+// FilterValues with filter value
+func FilterValues(value ...string) FilterOption {
 	return func(opts *Filter) {
 		filterValue := make(map[string]struct{})
 		for _, v := range value {
 			filterValue[v] = struct{}{}
 		}
-		opts.filterValue = filterValue
+		opts.value = filterValue
 	}
 }
 
-// FilterFunc with filter func
-func FilterFunc(f func(level Level, keyvals ...interface{}) bool) FilterOption {
+// FilterHook with filter func
+func FilterHook(f func(level Level, keyvals ...interface{}) bool) FilterOption {
 	return func(opts *Filter) {
-		opts.filterFunc = f
+		opts.filterHook = f
 	}
 }
 
@@ -66,21 +66,21 @@ func (h *Filter) Log(level Level, keyvals ...interface{}) error {
 }
 
 func (h *Filter) filter(level Level, keyvals []interface{}) bool {
-	if h.filterLevel > level {
+	if h.level > level {
 		return true
 	}
 	if len(keyvals)%2 == 0 {
 		for i := 0; i < len(keyvals); i += 2 {
-			if h.filterKey != nil {
+			if h.key != nil {
 				if v, ok := keyvals[i].(string); ok {
-					if _, ok := h.filterKey[v]; ok {
+					if _, ok := h.key[v]; ok {
 						keyvals[i+1] = "***"
 					}
 				}
 			}
-			if h.filterValue != nil {
+			if h.value != nil {
 				if v, ok := keyvals[i+1].(string); ok {
-					if _, ok := h.filterValue[v]; ok {
+					if _, ok := h.value[v]; ok {
 						keyvals[i+1] = "***"
 					}
 				}
@@ -89,14 +89,14 @@ func (h *Filter) filter(level Level, keyvals []interface{}) bool {
 	} else {
 		for i := 0; i < len(keyvals); i++ {
 			if v, ok := keyvals[i].(string); ok {
-				if _, ok := h.filterValue[v]; ok {
+				if _, ok := h.value[v]; ok {
 					keyvals[i] = "***"
 				}
 			}
 		}
 	}
-	if h.filterFunc != nil {
-		return h.filterFunc(level, keyvals...)
+	if h.filterHook != nil {
+		return h.filterHook(level, keyvals...)
 	}
 	return false
 }
diff --git a/log/filter_test.go b/log/filter_test.go
index 11ce79f46..e2766bd7e 100644
--- a/log/filter_test.go
+++ b/log/filter_test.go
@@ -1,7 +1,6 @@
 package log
 
 import (
-	"fmt"
 	"testing"
 )
 
@@ -9,9 +8,9 @@ func TestFilterAll(t *testing.T) {
 	logger := With(DefaultLogger, "ts", DefaultTimestamp, "caller", DefaultCaller)
 	log := NewHelper(NewFilter(logger,
 		FilterLevel(LevelDebug),
-		FilterKey("username"),
-		FilterValue("hello"),
-		FilterFunc(testFilterFunc),
+		FilterKeys("username"),
+		FilterValues("hello"),
+		FilterHook(testFilterFunc),
 	))
 	log.Log(LevelDebug, "msg", "test debug")
 	log.Info("hello")
@@ -29,21 +28,29 @@ func TestFilterLevel(t *testing.T) {
 	log.Warn("warn log")
 }
 
+func TestFilterCaller(t *testing.T) {
+	logger := With(DefaultLogger, "ts", DefaultTimestamp, "caller", DefaultCaller)
+	log := NewFilter(NewFilter(logger))
+	log.Log(LevelDebug, "msg1", "te1st debug")
+	logHelper := NewHelper(NewFilter(NewFilter(logger)))
+	logHelper.Log(LevelDebug, "msg1", "te1st debug")
+}
+
 func TestFilterKey(t *testing.T) {
 	logger := With(DefaultLogger, "ts", DefaultTimestamp, "caller", DefaultCaller)
-	log := NewHelper(NewFilter(logger, FilterKey("password")))
+	log := NewHelper(NewFilter(logger, FilterKeys("password")))
 	log.Debugw("password", "123456")
 }
 
 func TestFilterValue(t *testing.T) {
 	logger := With(DefaultLogger, "ts", DefaultTimestamp, "caller", DefaultCaller)
-	log := NewHelper(NewFilter(logger, FilterValue("debug")))
+	log := NewHelper(NewFilter(logger, FilterValues("debug")))
 	log.Debugf("test %s", "debug")
 }
 
 func TestFilterFunc(t *testing.T) {
 	logger := With(DefaultLogger, "ts", DefaultTimestamp, "caller", DefaultCaller)
-	log := NewHelper(NewFilter(logger, FilterFunc(testFilterFunc)))
+	log := NewHelper(NewFilter(logger, FilterHook(testFilterFunc)))
 	log.Debug("debug level")
 	log.Infow("password", "123456")
 }
@@ -58,10 +65,4 @@ func testFilterFunc(level Level, keyvals ...interface{}) bool {
 		}
 	}
 	return false
-}
-
-func TestDY(t *testing.T) {
-	kvs := []interface{}{}
-	//s := kvs[0].(string)
-	fmt.Println(fmt.Sprint(kvs[0]))
 }
\ No newline at end of file
diff --git a/log/value.go b/log/value.go
index c9364c7f1..6e3355b44 100644
--- a/log/value.go
+++ b/log/value.go
@@ -36,9 +36,9 @@ func Caller(depth int) Valuer {
 		h := strings.LastIndex(file, "/log/helper.go")
 		f := strings.LastIndex(file, "/log/filter.go")
 		if f > 0 {
-			_, file, line, _ = runtime.Caller(depth + 1)
+			_, file, line, _ = runtime.Caller(depth + 2)
 			if strings.LastIndex(file, "/log/helper.go") > 0 {
-				_, file, line, _ = runtime.Caller(depth + 2)
+				_, file, line, _ = runtime.Caller(depth + 3)
 			}
 		}
 		if h > 0 {