diff --git a/src/robot/Robot.ts b/src/robot/Robot.ts
index 896c3a6..3de4af9 100644
--- a/src/robot/Robot.ts
+++ b/src/robot/Robot.ts
@@ -186,7 +186,13 @@ export class Robot {
     }
     let self = this
     let cardArr = [...self.player.cards.values()]
-    let result = assistantUtil.discard({cardArr, eatCard: targetCard, rate: this.cheatRate, noEatRate: this.noEatRate, noTripleRate: this.noTripleRate})
+    let result = assistantUtil.discard({cardArr,
+      eatCard: targetCard,
+      rate: this.cheatRate,
+      noEatRate: this.noEatRate,
+      noTripleRate: this.noTripleRate,
+      playerId: this.sessionId
+    })
     let cards = result.cards;
     if (!cards || cards.length == 0) {
       return
diff --git a/src/robot/RobotClient.ts b/src/robot/RobotClient.ts
index 55db5a4..3e2e0ae 100644
--- a/src/robot/RobotClient.ts
+++ b/src/robot/RobotClient.ts
@@ -198,7 +198,12 @@ export class RobotClient implements Client {
   private async eatOrGiveUp() {
     let targetCard = [...this.svrstate.cards.values()][0]
     let cardArr = [...this.selfPlayer.cards.values()]
-    let result = assistantUtil.discard({cardArr, eatCard: targetCard, rate: this.cheatRate, noEatRate: this.noEatRate, noTripleRate: this.noTripleRate})
+    let result = assistantUtil.discard({cardArr,
+      eatCard: targetCard,
+      rate: this.cheatRate,
+      noEatRate: this.noEatRate,
+      playerId: this.sessionId,
+      noTripleRate: this.noTripleRate})
     let tmpCards = result.cards
     let next = this.giveup.bind(this)
     if (tmpCards.length > 1 && targetCard.type === 1) {
diff --git a/src/utils/assistant.util.ts b/src/utils/assistant.util.ts
index e12861e..67c4f7f 100644
--- a/src/utils/assistant.util.ts
+++ b/src/utils/assistant.util.ts
@@ -102,11 +102,11 @@ function seekSeq(pointMap: Map<number, Card[]>, points: number[], special?: Card
   return result
 }
 
-function parseCheat(this: any, cardArr: Card[], rate: number, eatCard?: Card) {
+function parseCheat(this: any, playerId: string, cardArr: Card[], rate: number, eatCard?: Card) {
   let minCount = eatCard ? new GameEnv().otherEatCount : new GameEnv().selfEatCount
   if (cardArr.length >= minCount && rate > 0) {
     let random = getRandom(0, 100)
-    robotLog(`[discard] check cheat ^_^ random: ${random}, rate: ${rate}`)
+    robotLog(`(${playerId})[discard] check cheat ^_^ random: ${random}, rate: ${rate}`)
     if (random <= rate) {
       let max = Math.min(minCount+2, cardArr.length + 1)
       let randomCount = getRandom(minCount, max)
@@ -172,7 +172,7 @@ function parseCheat(this: any, cardArr: Card[], rate: number, eatCard?: Card) {
     }
   }
   const oneCardArr: Card[] = cardArr.randomGet(1)
-  robotLog(`[discard] no cheat: ${oneCardArr[0].number}`)
+  robotLog(`(${playerId})[discard] no cheat: ${oneCardArr[0].number}`)
   return {cards: oneCardArr }
 }
 
@@ -227,12 +227,14 @@ let assistantUtil = {
   /**
    * 出牌
    */
-  discard({cardArr, eatCard, rate, noEatRate, noTripleRate}:
+  discard({cardArr, eatCard, rate, noEatRate, noTripleRate, playerId}:
                  {cardArr: Card[],
                    eatCard?: Card,
                    rate: number,
                    noEatRate: number,
-                   noTripleRate: number}): {cards: Card[], nums?: number[]} {
+                   noTripleRate: number,
+                   playerId?: string
+                 }): {cards: Card[], nums?: number[]} {
     const pointCardArr = cardArr.filter(c => c.type == CardType.general || c.type == CardType.variable_unit)
     const {
       selfEat,
@@ -242,27 +244,27 @@ let assistantUtil = {
       eatSecs,
       normalSecs
     } = this.checkDiscard({cardArr: pointCardArr, eatCard})
-    robotLog(`[discard] check: eatself: ${selfEat}, eatother: ${otherEat}, self: ${pointCardArr.map(o=>o.number)}, target: ${eatCard?.number}`)
+    robotLog(`(${playerId})[discard] check: eatself: ${selfEat}, eatother: ${otherEat}, self: ${pointCardArr.map(o=>o.number)}, target: ${eatCard?.number}`)
     let results: Card[] = []
     let random = getRandom(0, 100)
     if (otherEat && random <= noEatRate) {
-      robotLog(`[discard] cat eat, but random(${random}) <= cfg(${noEatRate})`)
+      robotLog(`(${playerId})[discard] cat eat, but random(${random}) <= cfg(${noEatRate})`)
     } else if (otherEat && random > noEatRate) {
       results = eatPairs.length > 0? eatPairs : eatSecs
-      robotLog(`[discard] eat card random(${random}) > cfg(${noEatRate}) ${results.map(o=>o.number)}`)
+      robotLog(`(${playerId})[discard] eat card random(${random}) > cfg(${noEatRate}) ${results.map(o=>o.number)}`)
     }
     random = getRandom(0, 100)
     if (selfEat && results.length == 0 && random <= noTripleRate) {
-      robotLog(`[discard] can hu, but random(${random}) <= cfg(${noTripleRate})`)
+      robotLog(`(${playerId})[discard] can hu, but random(${random}) <= cfg(${noTripleRate})`)
     } if (selfEat && results.length == 0 && random > noTripleRate) {
       results = normalPairs.length > 0 ? normalPairs : normalSecs
-      robotLog(`[discard] hu card random(${random}) > cfg(${noTripleRate}) ${results.map(o=>o.number)}`)
+      robotLog(`(${playerId})[discard] hu card random(${random}) > cfg(${noTripleRate}) ${results.map(o=>o.number)}`)
     }
     if (results.length == 0) {
       results = cardArr.randomGet(1)
     }
     if (!selfEat && !otherEat) {
-      return parseCheat(cardArr, rate, eatCard)
+      return parseCheat(playerId, cardArr, rate, eatCard)
     }
     return {cards: results}
   },
@@ -345,11 +347,11 @@ let assistantUtil = {
     }
 
     if (!result) {
-      error(`无法选择随从或法术, 随从数: ${ petCount }, 法术牌数量: ${ spellCards.length }`)
+      error(`(${dstPlayer.id})无法选择随从或法术, 随从数: ${ petCount }, 法术牌数量: ${ spellCards.length }`)
       return null
     }
     let targetType: SkillTargetType = CfgMan.getTargetByCard(result.effect)
-    robotLog(`select_pet ${ dstPlayer.id }: ${ result.effect } 类型: ${ effectMap.get(result.effect).type_id == EffectType.skill ? '法术' : '随从' }, targetType: ${ targetType }, oldpos: ${oldpos}`)
+    robotLog(`(${dstPlayer.id})select_pet ${ dstPlayer.id }: ${ result.effect } 类型: ${ effectMap.get(result.effect).type_id == EffectType.skill ? '法术' : '随从' }, targetType: ${ targetType }, oldpos: ${oldpos}`)
     let targetPlayer
     let targetPos
     switch (targetType) {