diff --git a/builder/tencentcloud/cvm/run_config.go b/builder/tencentcloud/cvm/run_config.go
index d7cc171..82df220 100644
--- a/builder/tencentcloud/cvm/run_config.go
+++ b/builder/tencentcloud/cvm/run_config.go
@@ -116,7 +116,8 @@ var ValidCBSType = []string{
 }
 
 func (cf *TencentCloudRunConfig) Prepare(ctx *interpolate.Context) []error {
-	packerId := fmt.Sprintf("packer_%s", uuid.TimeOrderedUUID()[:8])
+	timeOrderedUUID := uuid.TimeOrderedUUID()
+	packerId := fmt.Sprintf("packer_%s_%s", timeOrderedUUID[:8], timeOrderedUUID[9:13])
 	if cf.Comm.SSHKeyPairName == "" && cf.Comm.SSHTemporaryKeyPairName == "" &&
 		cf.Comm.SSHPrivateKeyFile == "" && cf.Comm.SSHPassword == "" && cf.Comm.WinRMPassword == "" {
 		//tencentcloud support key pair name length max to 25