diff --git a/server/light_backtask/task/chain_activity.go b/server/light_backtask/task/chain_activity.go
new file mode 100644
index 00000000..8a3221ca
--- /dev/null
+++ b/server/light_backtask/task/chain_activity.go
@@ -0,0 +1,14 @@
+package task
+
+import (
+)
+
+type chainActivity struct {
+
+}
+
+func (this* chainActivity) init() {
+}
+
+func (this* chainActivity) unInit() {
+}
diff --git a/server/light_backtask/task/taskmgr.go b/server/light_backtask/task/taskmgr.go
index 7671672f..d359400c 100644
--- a/server/light_backtask/task/taskmgr.go
+++ b/server/light_backtask/task/taskmgr.go
@@ -10,6 +10,7 @@ type taskMgr struct {
 	repairOrder
 	refreshMeta
 	contribution
+	chainActivity
 }
 
 func (this *taskMgr) Init() {
@@ -19,9 +20,11 @@ func (this *taskMgr) Init() {
 	this.repairOrder.init()
 	//this.refreshMeta.init()
 	//this.contribution.init()
+	this.chainActivity.init()
 }
 
 func (this *taskMgr) UnInit() {
+	this.chainActivity.unInit()
 	//this.contribution.unInit()
 	//this.refreshMeta.unInit()
 	this.repairOrder.unInit()