diff --git a/features/pm/kpi_c_report/controller.go b/features/pm/kpi_c_report/controller.go
index 3efc2531..09530358 100644
--- a/features/pm/kpi_c_report/controller.go
+++ b/features/pm/kpi_c_report/controller.go
@@ -42,11 +42,11 @@ func (k *KpiCReport) Get(c *gin.Context) {
 		return
 	}
 	if querys.StartTime != "" {
-		conditions = append(conditions, "(UNIX_TIMESTAMP(created_at) * 1000) >= ?")
+		conditions = append(conditions, "created_at >= ?")
 		params = append(params, querys.StartTime)
 	}
 	if querys.EndTime != "" {
-		conditions = append(conditions, "(UNIX_TIMESTAMP(created_at) * 1000) <= ?")
+		conditions = append(conditions, "created_at <= ?")
 		params = append(params, querys.EndTime)
 	}
 	conditions = append(conditions, "kpi_values != 'null'")
@@ -109,11 +109,11 @@ func (k *KpiCReport) GetReport2FE(c *gin.Context) {
 		return
 	}
 	if querys.StartTime != "" {
-		conditions = append(conditions, "(UNIX_TIMESTAMP(created_at) * 1000) >= ?")
+		conditions = append(conditions, "created_at >= ?")
 		params = append(params, querys.StartTime)
 	}
 	if querys.EndTime != "" {
-		conditions = append(conditions, "(UNIX_TIMESTAMP(created_at) * 1000) <= ?")
+		conditions = append(conditions, "created_at <= ?")
 		params = append(params, querys.EndTime)
 	}
 	conditions = append(conditions, "kpi_values != 'null'")
@@ -150,8 +150,8 @@ func (k *KpiCReport) GetReport2FE(c *gin.Context) {
 			// 支持的排序字段映射
 			fieldGetters := map[string]func(*KpiCReport) any{
 				"id":         func(row *KpiCReport) any { return row.ID },
-				"timeGroup":  func(row *KpiCReport) any { return row.CreatedAt.Unix() },
-				"created_at": func(row *KpiCReport) any { return row.CreatedAt.Unix() },
+				"timeGroup":  func(row *KpiCReport) any { return row.CreatedAt },
+				"created_at": func(row *KpiCReport) any { return row.CreatedAt },
 				// 可添加更多支持的字段
 			}
 
@@ -234,11 +234,11 @@ func (k *KpiCReport) GetTotalList(c *gin.Context) {
 	dbg := dborm.DefaultDB().Table(tableName)
 
 	if querys.StartTime != "" {
-		conditions = append(conditions, "(UNIX_TIMESTAMP(created_at) * 1000) >= ?")
+		conditions = append(conditions, "created_at >= ?")
 		params = append(params, querys.StartTime)
 	}
 	if querys.EndTime != "" {
-		conditions = append(conditions, "(UNIX_TIMESTAMP(created_at) * 1000) <= ?")
+		conditions = append(conditions, "created_at <= ?")
 		params = append(params, querys.EndTime)
 	}
 	conditions = append(conditions, "kpi_values != 'null'")
@@ -303,11 +303,11 @@ func (k *KpiCReport) Total(c *gin.Context) {
 	dbg := dborm.DefaultDB().Table(tableName)
 
 	if querys.StartTime != "" {
-		conditions = append(conditions, "(UNIX_TIMESTAMP(created_at) * 1000) >= ?")
+		conditions = append(conditions, "created_at >= ?")
 		params = append(params, querys.StartTime)
 	}
 	if querys.EndTime != "" {
-		conditions = append(conditions, "(UNIX_TIMESTAMP(created_at) * 1000) <= ?")
+		conditions = append(conditions, "created_at <= ?")
 		params = append(params, querys.EndTime)
 	}
 	conditions = append(conditions, "kpi_values != 'null'")
diff --git a/features/pm/kpi_c_report/model.go b/features/pm/kpi_c_report/model.go
index 512fb342..25d54097 100644
--- a/features/pm/kpi_c_report/model.go
+++ b/features/pm/kpi_c_report/model.go
@@ -4,7 +4,6 @@ import (
 	"database/sql/driver"
 	"encoding/json"
 	"fmt"
-	"time"
 )
 
 type KpiCVal struct {
@@ -26,7 +25,7 @@ type KpiCReport struct {
 	Index       int16      `gorm:"column:index" json:"index"`
 	Granularity *int8      `gorm:"column:granularity;default:60" json:"granularity,omitempty"` //Time granualarity: 5/10/.../60/300 (second)
 	KpiValues   KpiCValues `gorm:"column:kpi_values;type:json" json:"kpiValues,omitempty"`
-	CreatedAt   *time.Time `gorm:"column:created_at;default:current_timestamp()" json:"createdAt,omitempty"`
+	CreatedAt   int64      `gorm:"column:created_at" json:"createdAt,omitempty"`
 	TenantID    *string    `gorm:"column:tenant_id;default:NULL" json:"tenantID,omitempty"`
 }
 
diff --git a/features/pm/performance.go b/features/pm/performance.go
index 135ace03..e19dbb0a 100644
--- a/features/pm/performance.go
+++ b/features/pm/performance.go
@@ -292,6 +292,7 @@ func PostKPIReportFromNF(w http.ResponseWriter, r *http.Request) {
 		Index:       int16(kpiData.Index),
 		Granularity: &kpiData.Granularity,
 		TenantID:    &kpiData.TenantID,
+		CreatedAt:   kpiData.CreatedAt,
 	}
 
 	// 发送到匹配的网元