diff --git a/agent/logger.go b/agent/logger.go
index 9f315f7..c0902e2 100644
--- a/agent/logger.go
+++ b/agent/logger.go
@@ -6,6 +6,7 @@ import (
 	"path/filepath"
 	"strings"
 
+	"github.com/engigu/baihu-panel/internal/systime"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
 	"gopkg.in/natefinch/lumberjack.v2"
@@ -46,7 +47,8 @@ func (c *customCore) Check(ent zapcore.Entry, ce *zapcore.CheckedEntry) *zapcore
 }
 
 func (c *customCore) Write(ent zapcore.Entry, fields []zapcore.Field) error {
-	timestamp := ent.Time.Format("2006-01-02 15:04:05")
+	// 统一使用东八区时间
+	timestamp := systime.InCST(ent.Time).Format("2006-01-02 15:04:05")
 	level := strings.ToUpper(ent.Level.String())
 
 	var levelColor string
diff --git a/agent/main.go b/agent/main.go
index 5929b33..c959093 100644
--- a/agent/main.go
+++ b/agent/main.go
@@ -13,6 +13,7 @@ import (
 	"time"
 
 	internalLogger "github.com/engigu/baihu-panel/internal/logger"
+	"github.com/engigu/baihu-panel/internal/systime"
 	"github.com/engigu/baihu-panel/internal/utils"
 )
 
@@ -33,6 +34,8 @@ var (
 )
 
 func main() {
+	// 强制设置全局时区为东八区
+	time.Local = systime.CST
 	exePath, _ := os.Executable()
 	exeDir := filepath.Dir(exePath)
 	os.Chdir(exeDir)
diff --git a/internal/database/database.go b/internal/database/database.go
index e7a67bc..54bafc2 100644
--- a/internal/database/database.go
+++ b/internal/database/database.go
@@ -5,6 +5,7 @@ import (
 	"time"
 
 	"github.com/engigu/baihu-panel/internal/logger"
+	"github.com/engigu/baihu-panel/internal/systime"
 
 	"github.com/glebarez/sqlite"
 	"gorm.io/driver/mysql"
@@ -26,12 +27,9 @@ type Config struct {
 }
 
 func Init(cfg *Config) error {
+	var err error
 	// 设置东八区时区
-	loc, err := time.LoadLocation("Asia/Shanghai")
-	if err != nil {
-		logger.Warnf("[Database] 加载时区失败，使用 UTC: %v", err)
-		loc = time.UTC
-	}
+	loc := systime.CST
 	time.Local = loc
 
 	var dialector gorm.Dialector
diff --git a/internal/executor/cron.go b/internal/executor/cron.go
index f123f3e..63ae4af 100644
--- a/internal/executor/cron.go
+++ b/internal/executor/cron.go
@@ -2,13 +2,14 @@ package executor
 
 import (
 	"sync"
-	"time"
+
+	"github.com/engigu/baihu-panel/internal/systime"
 
 	"github.com/robfig/cron/v3"
 )
 
 // 东八区时区（默认）
-var defaultLocation = time.FixedZone("CST", 8*3600)
+var defaultLocation = systime.CST
 
 // CronManager 统一的任务调度管理器
 type CronManager struct {
diff --git a/internal/logger/logger.go b/internal/logger/logger.go
index 8baa27b..1f328f4 100644
--- a/internal/logger/logger.go
+++ b/internal/logger/logger.go
@@ -7,6 +7,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/engigu/baihu-panel/internal/systime"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
 )
@@ -47,7 +48,8 @@ func (c *customCore) Check(ent zapcore.Entry, ce *zapcore.CheckedEntry) *zapcore
 }
 
 func (c *customCore) Write(ent zapcore.Entry, fields []zapcore.Field) error {
-	timestamp := ent.Time.Format("2006-01-02 15:04:05")
+	// 统一使用东八区时间
+	timestamp := systime.InCST(ent.Time).Format("2006-01-02 15:04:05")
 	level := strings.ToUpper(ent.Level.String())
 
 	var levelColor string
@@ -82,6 +84,8 @@ func newLogger(output zapcore.WriteSyncer) *zap.Logger {
 }
 
 func init() {
+	// 强制设置全局时区为东八区
+	time.Local = systime.CST
 	atomicLevel = zap.NewAtomicLevelAt(zap.InfoLevel)
 	Log = newLogger(zapcore.AddSync(os.Stdout))
 	Sugar = Log.Sugar()
@@ -93,7 +97,7 @@ func SetupFileOutput(logDir string) error {
 		return err
 	}
 
-	logFile := filepath.Join(logDir, time.Now().Format("2006-01-02")+".log")
+	logFile := filepath.Join(logDir, systime.FormatDate(time.Now())+".log")
 	file, err := os.OpenFile(logFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 	if err != nil {
 		return err
diff --git a/internal/models/time.go b/internal/models/time.go
index 6195278..d8c9d28 100644
--- a/internal/models/time.go
+++ b/internal/models/time.go
@@ -4,6 +4,8 @@ import (
 	"database/sql/driver"
 	"fmt"
 	"time"
+
+	"github.com/engigu/baihu-panel/internal/systime"
 )
 
 const TimeFormat = "2006-01-02 15:04:05"
@@ -16,6 +18,8 @@ func (t LocalTime) MarshalJSON() ([]byte, error) {
 	if tt.IsZero() {
 		return []byte("null"), nil
 	}
+	// 统一输出为东八区时间
+	tt = systime.InCST(tt)
 	return []byte(fmt.Sprintf(`"%s"`, tt.Format(TimeFormat))), nil
 }
 
@@ -66,5 +70,5 @@ func (t LocalTime) Time() time.Time {
 }
 
 func Now() LocalTime {
-	return LocalTime(time.Now())
+	return LocalTime(systime.Now())
 }
diff --git a/internal/services/backup_service.go b/internal/services/backup_service.go
index a40a4c6..d3b6bb0 100644
--- a/internal/services/backup_service.go
+++ b/internal/services/backup_service.go
@@ -13,6 +13,7 @@ import (
 	"github.com/engigu/baihu-panel/internal/constant"
 	"github.com/engigu/baihu-panel/internal/database"
 	"github.com/engigu/baihu-panel/internal/models"
+	"github.com/engigu/baihu-panel/internal/systime"
 	"gorm.io/gorm"
 )
 
@@ -129,7 +130,7 @@ func (s *BackupService) CreateBackup() (string, error) {
 		return "", err
 	}
 
-	timestamp := time.Now().Format("20060102_150405")
+	timestamp := systime.FormatDatetime(time.Now())
 	zipPath := filepath.Join(BackupDir, fmt.Sprintf("backup_%s.zip", timestamp))
 
 	zipFile, err := os.Create(zipPath)
diff --git a/internal/services/send_stats_service.go b/internal/services/send_stats_service.go
index 1359662..c132e7b 100644
--- a/internal/services/send_stats_service.go
+++ b/internal/services/send_stats_service.go
@@ -5,6 +5,7 @@ import (
 
 	"github.com/engigu/baihu-panel/internal/database"
 	"github.com/engigu/baihu-panel/internal/models"
+	"github.com/engigu/baihu-panel/internal/systime"
 )
 
 type SendStatsService struct{}
@@ -15,7 +16,7 @@ func NewSendStatsService() *SendStatsService {
 
 // IncrementStats 增加任务执行统计
 func (s *SendStatsService) IncrementStats(taskID uint, status string) error {
-	day := time.Now().Format("2006-01-02")
+	day := systime.FormatDate(time.Now())
 
 	var stats models.SendStats
 	result := database.DB.Where("task_id = ? AND day = ? AND status = ?", taskID, day, status).First(&stats)
@@ -44,7 +45,7 @@ func (s *SendStatsService) GetStatsByTaskID(taskID uint) []models.SendStats {
 
 // GetTodayStats 获取今日统计
 func (s *SendStatsService) GetTodayStats() []models.SendStats {
-	day := time.Now().Format("2006-01-02")
+	day := systime.FormatDate(time.Now())
 	var stats []models.SendStats
 	database.DB.Where("day = ?", day).Find(&stats)
 	return stats
@@ -52,7 +53,7 @@ func (s *SendStatsService) GetTodayStats() []models.SendStats {
 
 // GetRecentStats 获取最近N天的统计
 func (s *SendStatsService) GetRecentStats(days int) []models.SendStats {
-	startDay := time.Now().AddDate(0, 0, -days).Format("2006-01-02")
+	startDay := systime.FormatDate(time.Now().AddDate(0, 0, -days))
 	var stats []models.SendStats
 	database.DB.Where("day >= ?", startDay).Order("day DESC").Find(&stats)
 	return stats
diff --git a/internal/services/tasks/task_log_service.go b/internal/services/tasks/task_log_service.go
index e459151..a4da34f 100644
--- a/internal/services/tasks/task_log_service.go
+++ b/internal/services/tasks/task_log_service.go
@@ -7,6 +7,7 @@ import (
 	"github.com/engigu/baihu-panel/internal/database"
 	"github.com/engigu/baihu-panel/internal/logger"
 	"github.com/engigu/baihu-panel/internal/models"
+	"github.com/engigu/baihu-panel/internal/systime"
 	"github.com/engigu/baihu-panel/internal/utils"
 )
 
@@ -35,7 +36,7 @@ type CleanConfig struct {
 
 // CreateEmptyLog 创建一个空的日志记录（任务开始时调用）
 func (s *TaskLogService) CreateEmptyLog(taskID uint, command string) (*models.TaskLog, error) {
-	startTime := models.LocalTime(time.Now())
+	startTime := models.Now()
 	taskLog := &models.TaskLog{
 		TaskID:    taskID,
 		Command:   command,
@@ -62,7 +63,7 @@ func (s *TaskLogService) SaveTaskLog(taskLog *models.TaskLog) error {
 	}
 
 	// 更新任务的 last_run
-	database.DB.Model(&models.Task{}).Where("id = ?", taskLog.TaskID).Update("last_run", time.Now())
+	database.DB.Model(&models.Task{}).Where("id = ?", taskLog.TaskID).Update("last_run", models.Now())
 
 	return nil
 }
@@ -109,7 +110,7 @@ func (s *TaskLogService) CleanTaskLogs(taskID uint) {
 	var deleted int64
 	switch config.Type {
 	case "day":
-		cutoff := time.Now().AddDate(0, 0, -config.Keep)
+		cutoff := systime.InCST(time.Now()).AddDate(0, 0, -config.Keep)
 		result := database.DB.Where("task_id = ? AND created_at < ?", taskID, cutoff).Delete(&models.TaskLog{})
 		deleted = result.RowsAffected
 	case "count":
diff --git a/internal/systime/systime.go b/internal/systime/systime.go
new file mode 100644
index 0000000..389eb91
--- /dev/null
+++ b/internal/systime/systime.go
@@ -0,0 +1,31 @@
+package systime
+
+import "time"
+
+// CST 东八区时区
+var CST = time.FixedZone("CST", 8*3600)
+
+// Now 返回东八区的当前时间
+func Now() time.Time {
+	return time.Now().In(CST)
+}
+
+// InCST 将给定时间转换为东八区时间
+func InCST(t time.Time) time.Time {
+	return t.In(CST)
+}
+
+// FormatTime 将时间格式化为标准格式
+func FormatTime(t time.Time) string {
+	return InCST(t).Format("2006-01-02 15:04:05")
+}
+
+// FormatDate 将时间格式化为日期格式
+func FormatDate(t time.Time) string {
+	return InCST(t).Format("2006-01-02")
+}
+
+// FormatDatetime 用于备份等文件命名格式
+func FormatDatetime(t time.Time) string {
+	return InCST(t).Format("20060102_150405")
+}