diff --git a/server/backtask/task/spec_transfer721.go b/server/backtask/task/spec_transfer721.go
new file mode 100644
index 00000000..6c7ea385
--- /dev/null
+++ b/server/backtask/task/spec_transfer721.go
@@ -0,0 +1,11 @@
+package task
+
+type specTransfer721 struct {
+
+}
+
+func (this* specTransfer721) init() {
+}
+
+func (this* specTransfer721) unInit() {
+}