diff --git a/server/light_backtask/task/stacking_go.go b/server/light_backtask/task/stacking_go.go
index ff0e955a..cb27de3c 100644
--- a/server/light_backtask/task/stacking_go.go
+++ b/server/light_backtask/task/stacking_go.go
@@ -8,6 +8,7 @@ import (
 	"jccommon"
 	"fmt"
 	"strings"
+	"math/big"
 )
 
 const (
@@ -110,15 +111,7 @@ func (this *stackingCec) saveToDb(ds *f5.DataSet) bool {
 		if dbErr != nil {
 			return false
 		}
-		if eventName == EVENT_NAME_STAKE_CEC {
-			if !this.applyStake(idx, p) {
-				return false
-			}
-		} else if eventName == EVENT_NAME_UNSTAKE_CEC {
-			if !this.applyUnstake(idx, p) {
-				return false
-			}
-		} else {
+		if !this.apply(idx, eventName, p) {
 			return false
 		}
 	}
@@ -135,10 +128,17 @@ func (this *stackingCec) saveToDb(ds *f5.DataSet) bool {
 	return true
 }
 
-func (this *stackingCec) applyStake(idx int64, p *jccommon.ContractStakeAndUnstakeCecPo) bool {
-	return true
-}
-
-func (this *stackingCec) applyUnstake(idx int64, p *jccommon.ContractStakeAndUnstakeCecPo) bool {
+func (this *stackingCec) apply(idx int64, eventName string,
+	p *jccommon.ContractStakeAndUnstakeCecPo) bool {
+	bnAmount, ok := new(big.Int).SetString(p.Amount, 10)
+	if !ok {
+		return false
+	}
+	if eventName == EVENT_NAME_STAKE_CEC {
+	} else if eventName == EVENT_NAME_UNSTAKE_CEC {
+		bnAmount = big.NewInt(0).Sub(big.NewInt(0), bnAmount)
+	} else {
+		return false
+	}
 	return true
 }