diff --git a/tencentcloud/extension_cvm.go b/tencentcloud/extension_cvm.go
index c8b64d4dfb..86ad666089 100644
--- a/tencentcloud/extension_cvm.go
+++ b/tencentcloud/extension_cvm.go
@@ -31,6 +31,8 @@ const (
 
 	ZONE_STATE_AVAILABLE   = "AVAILABLE"
 	ZONE_STATE_UNAVAILABLE = "UNAVAILABLE"
+
+	CVM_NOT_FOUND_ERROR = "InvalidInstanceId.NotFound"
 )
 
 var CVM_CHARGE_TYPE = []string{
diff --git a/tencentcloud/resource_tc_key_pair.go b/tencentcloud/resource_tc_key_pair.go
index 3eff6001de..be7ff477a6 100644
--- a/tencentcloud/resource_tc_key_pair.go
+++ b/tencentcloud/resource_tc_key_pair.go
@@ -26,6 +26,7 @@ import (
 
 	"github.com/hashicorp/terraform/helper/resource"
 	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/common/errors"
 	cvm "github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/cvm/v20170312"
 )
 
@@ -186,6 +187,11 @@ func resourceTencentCloudKeyPairDelete(d *schema.ResourceData, meta interface{})
 		err = resource.Retry(writeRetryTimeout, func() *resource.RetryError {
 			errRet := cvmService.UnbindKeyPair(ctx, keyId, keyPair.AssociatedInstanceIds)
 			if errRet != nil {
+				if sdkErr, ok := errRet.(*errors.TencentCloudSDKError); ok {
+					if sdkErr.Code == CVM_NOT_FOUND_ERROR {
+						return nil
+					}
+				}
 				return retryError(errRet)
 			}
 			return nil