diff --git a/src/chain/allchain.ts b/src/chain/allchain.ts
index ae1edb2..9cab85f 100644
--- a/src/chain/allchain.ts
+++ b/src/chain/allchain.ts
@@ -277,7 +277,7 @@ export const AllChains: IChain[] = [
   {
     name: 'Arbitrum Sepolia',
     type: 'Testnet',
-    rpc: 'https://arb-sepolia.g.alchemy.com/v2/EKR1je8ZGia332kkemNc4mtXQuFskIq3',
+    rpc: 'https://arb-sepolia.g.alchemy.com/v2/mHoYM0SyjeizxvdjShcdOHiCrXOM_mlg|https://arb-sepolia.g.alchemy.com/v2/EKR1je8ZGia332kkemNc4mtXQuFskIq3',
     id: 421614,
     network: 'ARB_SEPOLIA',
     symbol: 'ETH',
diff --git a/src/chain/chain.api.ts b/src/chain/chain.api.ts
index 9327b1a..6834fe1 100644
--- a/src/chain/chain.api.ts
+++ b/src/chain/chain.api.ts
@@ -81,16 +81,6 @@ export const batchEthBlocks = async (rpc: string, blockNumbers: number[]) => {
 }
 
 export const batchEthLogs = async (rpc: string, params: any) => {
-  // let batch = []
-  // for (let i = 0; i < params.length; i++) {
-  //   batch.push({
-  //     jsonrpc: "2.0",
-  //     method: "eth_getLogs",
-  //     params: [params[i]],
-  //     id: ids[i]
-  //   })
-  // }
-  
   return fetch(rpc, {
     method: "POST",
     headers: {
diff --git a/src/service/event.batch.service.ts b/src/service/event.batch.service.ts
index 11d1bd6..83ae910 100644
--- a/src/service/event.batch.service.ts
+++ b/src/service/event.batch.service.ts
@@ -1,5 +1,5 @@
 import { IChain } from "chain/allchain";
-import { batchEthLogs, ethBlockNumber } from "chain/chain.api";
+import { batchEthLogs, ethGetLogs } from "chain/chain.api";
 import { IEventCfg } from "config/events_cfg";
 import logger from "logger/logger";
 import { GeneralEvent } from "models/GeneralEvent";
@@ -7,6 +7,7 @@ import { GeneralEvent } from "models/GeneralEvent";
 import { RedisClient } from "redis/RedisClient";
 import { decodeEvent, getTopics } from "utils/event.util";
 
+const MAX_TOPICS = 4
 
 export class EventBatchSvr {
   chainCfg: IChain
@@ -24,29 +25,85 @@ export class EventBatchSvr {
       if (!cfg.topic) {
         cfg.topic = getTopics(cfg)
       }
-      this.processer.set(cfg.address+cfg.topic, cfg)
+      this.processer.set((cfg.address+cfg.topic).toLowerCase(), cfg)
     }
     this.redisKey = `event_${this.chainCfg.id}`
   }
 
   async execute() {
-    logger.info(`begin sync events with chain: ${this.chainCfg.id}`)
+    
     try {
       // let currentBlock = await ethBlockNumber(this.rpc)
+      let blockStr = await new RedisClient().get(this.redisKey)
+      if (blockStr) {
+        this.fromBlock = Math.max(parseInt(blockStr), this.fromBlock)
+      }
+      logger.info(`begin sync events with chain: ${this.chainCfg.id}, from block: ${this.fromBlock}`)
       let params = []
+      let uninParams = []
+      let topicsSet = new Set()
       for (let cfg of this.eventCfgs) {
-        let param = await this.buildQueryParams(cfg)
-        params.push(param)
-      }
-      let results = await batchEthLogs(this.rpc, params)
-      for (let i = 0; i < results.length; i++) {
-        if (results[i].error) {
-          console.log(results[i].error)
-          continue
+        await this.fixBlockNumber(cfg)
+        if (cfg.fromBlock != this.fromBlock) {
+          let _param = this.buildQueryParams(cfg)
+          params.push(_param)
+        } else {
+          let _param = uninParams[uninParams.length - 1]
+          if (!_param || topicsSet.size > MAX_TOPICS) {
+            _param = this.buildQueryParams(cfg)
+            uninParams.push(_param)
+            topicsSet = new Set()
+          } else {
+            let topic = getTopics(cfg)
+            if (!topicsSet.has(topic)) {
+              _param.params[0].topics.push(topic)
+              topicsSet.add(topic)
+            }
+            _param.params[0].address.push(cfg.address)
+          }
         }
-        let events = results[i].result
-        await this.processEvents(events)
       }
+      let nextBlock = this.fromBlock
+      if (uninParams.length > 1) {
+        logger.debug(`unin params: ${uninParams.length}`)
+        let results = await batchEthLogs(this.rpc, uninParams)
+        for (let i = 0; i < results.length; i++) {
+          if (results[i].error) {
+            throw results[i].error
+          }
+          let events = results[i].result
+          let num = await this.processEvents(events)
+          nextBlock = Math.max(num, nextBlock)
+        }
+      } else if (uninParams.length == 1) {
+        logger.debug(`unin params length 1, use eth_getLogs`)
+        let result = await ethGetLogs(this.rpc, uninParams[0])
+        if (result.error) {
+          throw result.error
+        }
+        let num = await this.processEvents(result.result)
+        nextBlock = Math.max(num, nextBlock)
+      }
+      if (params.length > 0) {
+        logger.debug(`params: ${params.length}`)
+        let results = await batchEthLogs(this.rpc, params)
+        for (let i = 0; i < results.length; i++) {
+          if (results[i].error) {
+            throw results[i].error
+          }
+          let events = results[i].result
+          let num = await this.processEvents(events)
+          nextBlock = Math.max(num, nextBlock)
+        }
+      }
+      nextBlock ++;
+      for (let cfg of this.eventCfgs) {
+        cfg.fromBlock = nextBlock
+        const redisKey = this.buildRedisKey(cfg)
+        await new RedisClient().set(redisKey, cfg.fromBlock + '')
+      }
+      await new RedisClient().set(this.redisKey, nextBlock + '')
+      
     } catch (err) {
       console.log(err)
     }
@@ -56,19 +113,20 @@ export class EventBatchSvr {
     return `event_${this.chainCfg.id}_${cfg.address}_${cfg.event}`
   }
 
-  async buildQueryParams(cfg: IEventCfg, toBlock?: string) {
+  async fixBlockNumber(cfg: IEventCfg) {
     const redisKey = this.buildRedisKey(cfg)
-    
-    const params: any = {
-      fromBlock: cfg.fromBlock,
-      toBlock: toBlock || 'latest',
-      address: cfg.address
-    }
     let blockStr = await new RedisClient().get(redisKey)
     if (blockStr) {
-      params.fromBlock = Math.max(parseInt(blockStr), cfg.fromBlock)
+      cfg.fromBlock = Math.max(parseInt(blockStr), cfg.fromBlock)
+    }
+  }
+
+  buildQueryParams(cfg: IEventCfg) {
+    const params: any = {
+      fromBlock: '0x' + cfg.fromBlock.toString(16),
+      toBlock: 'latest',
+      address: [cfg.address]
     }
-    params.fromBlock = '0x' + params.fromBlock.toString(16)
     params.topics = [getTopics(cfg)]
     const result = {
       jsonrpc: "2.0",
@@ -80,27 +138,30 @@ export class EventBatchSvr {
   }
 
   async processEvents(events: any[]) {
+    let blockNumber = 0
     if (events.length === 0) {
-      return
+      return blockNumber
     }
-    const address = events[0].address
-    const topic = events[0].topics[0]
-    const cfg = this.processer.get(address+topic)
-    logger.info(`process events: ${cfg.chain} | ${address} | ${cfg.event} | ${events.length}`)
-    
+    logger.info(`process events: ${events.length}`)
     for (const event of events) {
+      const address = events[0].address
+      const topic = events[0].topics[0]
+      const cfg = this.processer.get((address+topic).toLowerCase())
+      if (!cfg) {
+        continue;
+      }
       event.chain = this.chainCfg.id + ''
       event.event = cfg.event
       let result = decodeEvent(cfg, event);
-      cfg.fromBlock = Math.max (parseInt(event.blockNumber, 16) + 1, cfg.fromBlock)
+      // cfg.fromBlock = Math.max (parseInt(event.blockNumber, 16) + 1, cfg.fromBlock)
       event.decodedData = result
       const record = await GeneralEvent.saveEvent(event)
+      blockNumber = Math.max(parseInt(event.blockNumber, 16), cfg.fromBlock)
       if (cfg.eventProcesser) {
         // @ts-ignore
         await cfg.eventProcesser.parseEvent(record)
-      }
+      } 
     }
-    const redisKey = this.buildRedisKey(cfg)
-    await new RedisClient().set(redisKey, cfg.fromBlock + '')
+    return blockNumber
   }
 }
\ No newline at end of file