diff --git a/go.mod b/go.mod
index 940cfd7..6d393b2 100644
--- a/go.mod
+++ b/go.mod
@@ -18,6 +18,7 @@ require (
 	github.com/ory/graceful v0.1.1
 	github.com/p14yground/go-github-selfupdate v0.0.0-20210520015421-eddf14461293
 	github.com/patrickmn/go-cache v2.1.0+incompatible
+	github.com/pkg/errors v0.9.1 // indirect
 	github.com/robfig/cron/v3 v3.0.1
 	github.com/shirou/gopsutil/v3 v3.21.7
 	github.com/spf13/viper v1.7.1
diff --git a/go.sum b/go.sum
index 8d4cf3b..6ee4cba 100644
--- a/go.sum
+++ b/go.sum
@@ -262,9 +262,10 @@ github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTK
 github.com/pelletier/go-toml v1.2.0 h1:T5zMGML61Wp+FlcbWjRDT7yAxhJNAiPPLOFECq181zc=
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/posener/complete v1.1.1/go.mod h1:em0nMJCgc9GFtwrmVmEMR/ZL6WyhyjMBndrE9hABlRI=
diff --git a/service/dao/servicesentinel.go b/service/dao/servicesentinel.go
index 53c8d35..c82920f 100644
--- a/service/dao/servicesentinel.go
+++ b/service/dao/servicesentinel.go
@@ -100,11 +100,13 @@ type ServiceSentinel struct {
 }
 
 func (ss *ServiceSentinel) refreshMonthlyServiceStatus() {
+	// 刷新数据防止无人访问
+	ss.LoadStats()
+	// 将数据往前刷一天
 	ss.monthlyStatusLock.Lock()
 	defer ss.monthlyStatusLock.Unlock()
-	// 将数据往前搦
 	for _, v := range ss.monthlyStatus {
-		for i := 0; i < len(v.Up)-2; i++ {
+		for i := 0; i < len(v.Up)-1; i++ {
 			v.Up[i] = v.Up[i+1]
 			v.Down[i] = v.Down[i+1]
 			v.Delay[i] = v.Delay[i+1]