diff --git a/timeutil/trans.go b/timeutil/trans.go
index 01fedb6..60184a2 100644
--- a/timeutil/trans.go
+++ b/timeutil/trans.go
@@ -9,10 +9,20 @@ import (
 	"github.com/tx7do/go-utils/trans"
 )
 
-var DefaultTimeLocation *time.Location
+var defaultTimeLocation *time.Location
 
-func RefreshDefaultTimeLocation(name string) {
-	DefaultTimeLocation, _ = time.LoadLocation(name)
+func RefreshDefaultTimeLocation(name string) *time.Location {
+	if defaultTimeLocation == nil {
+		defaultTimeLocation, _ = time.LoadLocation(name)
+	}
+	return defaultTimeLocation
+}
+
+func GetDefaultTimeLocation() *time.Location {
+	if defaultTimeLocation == nil {
+		RefreshDefaultTimeLocation(DefaultTimeLocationName)
+	}
+	return defaultTimeLocation
 }
 
 // UnixMilliToStringPtr 毫秒时间戳 -> 字符串
@@ -26,6 +36,10 @@ func UnixMilliToStringPtr(tm *int64) *string {
 
 // StringToUnixMilliInt64Ptr 字符串 -> 毫秒时间戳
 func StringToUnixMilliInt64Ptr(tm *string) *int64 {
+	if tm == nil {
+		return nil
+	}
+
 	theTime := StringTimeToTime(tm)
 	if theTime == nil {
 		return nil
@@ -43,24 +57,20 @@ func StringTimeToTime(str *string) *time.Time {
 		return nil
 	}
 
-	if DefaultTimeLocation == nil {
-		RefreshDefaultTimeLocation(DefaultTimeLocationName)
-	}
-
 	var err error
 	var theTime time.Time
 
-	theTime, err = time.ParseInLocation(TimeLayout, *str, DefaultTimeLocation)
+	theTime, err = time.ParseInLocation(TimeLayout, *str, GetDefaultTimeLocation())
 	if err == nil {
 		return &theTime
 	}
 
-	theTime, err = time.ParseInLocation(DateLayout, *str, DefaultTimeLocation)
+	theTime, err = time.ParseInLocation(DateLayout, *str, GetDefaultTimeLocation())
 	if err == nil {
 		return &theTime
 	}
 
-	theTime, err = time.ParseInLocation(ClockLayout, *str, DefaultTimeLocation)
+	theTime, err = time.ParseInLocation(ClockLayout, *str, GetDefaultTimeLocation())
 	if err == nil {
 		return &theTime
 	}
@@ -85,24 +95,20 @@ func StringDateToTime(str *string) *time.Time {
 		return nil
 	}
 
-	if DefaultTimeLocation == nil {
-		RefreshDefaultTimeLocation(DefaultTimeLocationName)
-	}
-
 	var err error
 	var theTime time.Time
 
-	theTime, err = time.ParseInLocation(TimeLayout, *str, DefaultTimeLocation)
+	theTime, err = time.ParseInLocation(TimeLayout, *str, GetDefaultTimeLocation())
 	if err == nil {
 		return &theTime
 	}
 
-	theTime, err = time.ParseInLocation(DateLayout, *str, DefaultTimeLocation)
+	theTime, err = time.ParseInLocation(DateLayout, *str, GetDefaultTimeLocation())
 	if err == nil {
 		return &theTime
 	}
 
-	theTime, err = time.ParseInLocation(ClockLayout, *str, DefaultTimeLocation)
+	theTime, err = time.ParseInLocation(ClockLayout, *str, GetDefaultTimeLocation())
 	if err == nil {
 		return &theTime
 	}
@@ -138,7 +144,16 @@ func FloatToDurationpb(duration *float64, timePrecision time.Duration) *duration
 	if duration == nil {
 		return nil
 	}
-	return durationpb.New(time.Duration(*duration) * timePrecision)
+	return durationpb.New(time.Duration(*duration * float64(timePrecision)))
+}
+
+func Float64ToDurationpb(d float64) *durationpb.Duration {
+	duration := time.Duration(d * float64(time.Second))
+	return durationpb.New(duration)
+}
+
+func SecondToDurationpb(seconds *float64) *durationpb.Duration {
+	return FloatToDurationpb(seconds, time.Second)
 }
 
 func DurationpbToFloat(duration *durationpb.Duration, timePrecision time.Duration) *float64 {
@@ -180,3 +195,12 @@ func DurationpbToDuration(duration *durationpb.Duration) *time.Duration {
 	d := duration.AsDuration()
 	return &d
 }
+
+func DurationpbSecond(duration *durationpb.Duration) *float64 {
+	if duration == nil {
+		return nil
+	}
+	seconds := duration.AsDuration().Seconds()
+	secondsInt64 := seconds
+	return &secondsInt64
+}
diff --git a/timeutil/trans_test.go b/timeutil/trans_test.go
index 99ec12b..66e2aa0 100644
--- a/timeutil/trans_test.go
+++ b/timeutil/trans_test.go
@@ -2,9 +2,11 @@ package timeutil
 
 import (
 	"fmt"
+	"google.golang.org/protobuf/types/known/timestamppb"
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/assert"
 	"github.com/tx7do/go-utils/trans"
 	"google.golang.org/protobuf/types/known/durationpb"
 )
@@ -28,11 +30,152 @@ func TestUnixMilliToStringPtr(t *testing.T) {
 
 	fmt.Println(StringTimeToTime(trans.Ptr("2023-03-08 00:00:00")).UnixMilli())
 	fmt.Println(StringDateToTime(trans.Ptr("2023-03-07")).UnixMilli())
+
+	// 测试有效输入
+	now = time.Now().UnixMilli()
+	result := UnixMilliToStringPtr(&now)
+	assert.NotNil(t, result)
+	expected := time.UnixMilli(now).Format(TimeLayout)
+	assert.Equal(t, expected, *result)
+
+	// 测试空输入
+	result = UnixMilliToStringPtr(nil)
+	assert.Nil(t, result)
+}
+
+func TestStringToUnixMilliInt64Ptr(t *testing.T) {
+	// 测试有效输入
+	input := "2023-03-09 00:00:00"
+	expected := time.Date(2023, 3, 9, 0, 0, 0, 0, GetDefaultTimeLocation()).UnixMilli()
+	result := StringToUnixMilliInt64Ptr(&input)
+	assert.NotNil(t, result)
+	assert.Equal(t, expected, *result)
+
+	// 测试无效输入
+	invalidInput := "invalid-date"
+	result = StringToUnixMilliInt64Ptr(&invalidInput)
+	assert.Nil(t, result)
+
+	// 测试空字符串输入
+	emptyInput := ""
+	result = StringToUnixMilliInt64Ptr(&emptyInput)
+	assert.Nil(t, result)
+
+	// 测试空指针输入
+	result = StringToUnixMilliInt64Ptr(nil)
+	assert.Nil(t, result)
+}
+
+func TestStringTimeToTime(t *testing.T) {
+	// 测试有效时间字符串输入
+	input := "2023-03-09 12:34:56"
+	expected := time.Date(2023, 3, 9, 12, 34, 56, 0, GetDefaultTimeLocation())
+	result := StringTimeToTime(&input)
+	assert.NotNil(t, result)
+	assert.Equal(t, expected, *result)
+
+	// 测试有效日期字符串输入
+	input = "2023-03-09"
+	expected = time.Date(2023, 3, 9, 0, 0, 0, 0, GetDefaultTimeLocation())
+	result = StringTimeToTime(&input)
+	assert.NotNil(t, result)
+	assert.Equal(t, expected, *result)
+
+	// 测试无效时间字符串输入
+	invalidInput := "invalid-date"
+	result = StringTimeToTime(&invalidInput)
+	assert.Nil(t, result)
+
+	// 测试空字符串输入
+	emptyInput := ""
+	result = StringTimeToTime(&emptyInput)
+	assert.Nil(t, result)
+
+	// 测试空指针输入
+	result = StringTimeToTime(nil)
+	assert.Nil(t, result)
+}
+
+func TestTimeToTimeString(t *testing.T) {
+	// 测试非空输入
+	now := time.Now()
+	result := TimeToTimeString(&now)
+	assert.NotNil(t, result)
+	expected := now.Format(TimeLayout)
+	assert.Equal(t, expected, *result)
+
+	// 测试空输入
+	result = TimeToTimeString(nil)
+	assert.Nil(t, result)
+}
+
+func TestStringDateToTime(t *testing.T) {
+	// 测试有效日期字符串输入
+	input := "2023-03-09"
+	expected := time.Date(2023, 3, 9, 0, 0, 0, 0, GetDefaultTimeLocation())
+	result := StringDateToTime(&input)
+	assert.NotNil(t, result)
+	assert.Equal(t, expected, *result)
+
+	// 测试无效日期字符串输入
+	invalidInput := "invalid-date"
+	result = StringDateToTime(&invalidInput)
+	assert.Nil(t, result)
+
+	// 测试空字符串输入
+	emptyInput := ""
+	result = StringDateToTime(&emptyInput)
+	assert.Nil(t, result)
+
+	// 测试空指针输入
+	result = StringDateToTime(nil)
+	assert.Nil(t, result)
 }
 
 func TestTimeToDateString(t *testing.T) {
 	fmt.Println(*TimeToTimeString(trans.Time(time.Now())))
 	fmt.Println(*TimeToDateString(trans.Time(time.Now())))
+
+	// 测试非空输入
+	now := time.Now()
+	result := TimeToDateString(&now)
+	assert.NotNil(t, result)
+	expected := now.Format(DateLayout)
+	assert.Equal(t, expected, *result)
+
+	// 测试空输入
+	result = TimeToDateString(nil)
+	assert.Nil(t, result)
+}
+
+func TestTimestamppbToTime(t *testing.T) {
+	// 测试有效输入
+	timestamp := timestamppb.Now()
+	result := TimestamppbToTime(timestamp)
+	assert.NotNil(t, result)
+	assert.Equal(t, timestamp.AsTime(), *result)
+
+	// 测试零时间输入
+	zeroTimestamp := timestamppb.New(time.Time{})
+	result = TimestamppbToTime(zeroTimestamp)
+	assert.NotNil(t, result)
+	assert.Equal(t, time.Time{}, *result)
+
+	// 测试空输入
+	result = TimestamppbToTime(nil)
+	assert.Nil(t, result)
+}
+
+func TestTimeToTimestamppb(t *testing.T) {
+	// 测试非空输入
+	now := time.Now()
+	result := TimeToTimestamppb(&now)
+	assert.NotNil(t, result)
+	assert.Equal(t, timestamppb.New(now), result)
+
+	// 测试空输入
+	result = TimeToTimestamppb(nil)
+	assert.Nil(t, result)
 }
 
 func TestDurationpb(t *testing.T) {
@@ -56,3 +199,109 @@ func TestDurationpb(t *testing.T) {
 	fmt.Println(NumberToDurationpb(trans.Ptr(100.0), time.Minute).String())
 	fmt.Println(*DurationpbToNumber[float64](durationpb.New(100*time.Minute), time.Minute))
 }
+
+func TestFloatToDurationpb(t *testing.T) {
+	// 测试有效输入
+	input := 1.5 // 1.5秒
+	timePrecision := time.Second
+	expected := durationpb.New(1500 * time.Millisecond)
+	result := FloatToDurationpb(&input, timePrecision)
+	assert.NotNil(t, result)
+	assert.Equal(t, expected, result)
+
+	// 测试零输入
+	input = 0.0
+	expected = durationpb.New(0)
+	result = FloatToDurationpb(&input, timePrecision)
+	assert.NotNil(t, result)
+	assert.Equal(t, expected, result)
+
+	// 测试空输入
+	result = FloatToDurationpb(nil, timePrecision)
+	assert.Nil(t, result)
+}
+
+func TestDurationToDurationpb(t *testing.T) {
+	// 测试非空输入
+	duration := time.Duration(5 * time.Second)
+	result := DurationToDurationpb(&duration)
+	assert.NotNil(t, result)
+	assert.Equal(t, durationpb.New(duration), result)
+
+	// 测试空输入
+	result = DurationToDurationpb(nil)
+	assert.Nil(t, result)
+}
+
+func TestDurationpbToDuration(t *testing.T) {
+	// 测试非空输入
+	durationpbValue := durationpb.New(5 * time.Second)
+	result := DurationpbToDuration(durationpbValue)
+	assert.NotNil(t, result)
+	assert.Equal(t, 5*time.Second, *result)
+
+	// 测试空输入
+	result = DurationpbToDuration(nil)
+	assert.Nil(t, result)
+}
+
+func TestFloat64ToDurationpb(t *testing.T) {
+	// 测试有效输入
+	input := 1.5 // 1.5秒
+	expected := durationpb.New(1500 * time.Millisecond)
+	result := Float64ToDurationpb(input)
+	assert.NotNil(t, result)
+	assert.Equal(t, expected, result)
+
+	// 测试零输入
+	input = 0.0
+	expected = durationpb.New(0)
+	result = Float64ToDurationpb(input)
+	assert.NotNil(t, result)
+	assert.Equal(t, expected, result)
+
+	// 测试负数输入
+	input = -2.5 // -2.5秒
+	expected = durationpb.New(-2500 * time.Millisecond)
+	result = Float64ToDurationpb(input)
+	assert.NotNil(t, result)
+	assert.Equal(t, expected, result)
+}
+
+func TestSecondToDurationpb(t *testing.T) {
+	// 测试有效输入
+	input := 2.5 // 2.5秒
+	expected := durationpb.New(2500 * time.Millisecond)
+	result := SecondToDurationpb(&input)
+	assert.NotNil(t, result)
+	assert.Equal(t, expected, result)
+
+	// 测试零输入
+	input = 0.0
+	expected = durationpb.New(0)
+	result = SecondToDurationpb(&input)
+	assert.NotNil(t, result)
+	assert.Equal(t, expected, result)
+
+	// 测试空输入
+	result = SecondToDurationpb(nil)
+	assert.Nil(t, result)
+}
+
+func TestDurationpbSecond(t *testing.T) {
+	// 测试非空输入
+	duration := durationpb.New(5 * time.Second)
+	result := DurationpbSecond(duration)
+	assert.NotNil(t, result)
+	assert.Equal(t, 5.0, *result, "应返回正确的秒数")
+
+	// 测试零输入
+	duration = durationpb.New(0)
+	result = DurationpbSecond(duration)
+	assert.NotNil(t, result)
+	assert.Equal(t, 0.0, *result, "应返回零秒")
+
+	// 测试空输入
+	result = DurationpbSecond(nil)
+	assert.Nil(t, result, "空输入应返回nil")
+}