diff --git a/models/esRaw.go b/models/esRaw.go
index b893c24..a09dc67 100644
--- a/models/esRaw.go
+++ b/models/esRaw.go
@@ -6,7 +6,7 @@ type EsRaw struct {
 	StructId       int               `json:"structId"`
 	IotaDeviceName string            `json:"iota_device_name"`
 	Data           map[string]any    `json:"data"`
-	CollectTime    time.Time         `json:"collect_time"`
+	CollectTime    string            `json:"collect_time"`
 	Meta           map[string]string `json:"meta"`
 	IotaDevice     string            `json:"iota_device"`
 	CreateTime     time.Time         `json:"create_time"`