diff --git a/back-end-projects/Explorer/src/main/java/com/github/ontio/model/dao/NodeInfoOnChainWithRankChange.java b/back-end-projects/Explorer/src/main/java/com/github/ontio/model/dao/NodeInfoOnChainWithRankChange.java
index ab09d5a5..f11d1d0d 100644
--- a/back-end-projects/Explorer/src/main/java/com/github/ontio/model/dao/NodeInfoOnChainWithRankChange.java
+++ b/back-end-projects/Explorer/src/main/java/com/github/ontio/model/dao/NodeInfoOnChainWithRankChange.java
@@ -8,7 +8,7 @@
 @Data
 @AllArgsConstructor
 @EqualsAndHashCode(callSuper = true)
-public class NodeInfoOnChainWithRankChange extends NodeInfoOnChain {
+public class NodeInfoOnChainWithRankChange extends NodeInfoOnChainDto {
 
     private Integer rankChange;
 
diff --git a/back-end-projects/Explorer/src/main/java/com/github/ontio/model/dto/NodeInfoOnChainDto.java b/back-end-projects/Explorer/src/main/java/com/github/ontio/model/dto/NodeInfoOnChainDto.java
index 45f09c8a..a94175cf 100644
--- a/back-end-projects/Explorer/src/main/java/com/github/ontio/model/dto/NodeInfoOnChainDto.java
+++ b/back-end-projects/Explorer/src/main/java/com/github/ontio/model/dto/NodeInfoOnChainDto.java
@@ -2,21 +2,35 @@
 
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.github.ontio.model.dao.NodeInfoOnChain;
-import lombok.NoArgsConstructor;
+import lombok.Data;
 
+import javax.persistence.Column;
 import javax.persistence.Table;
 
 @Table(name = "tbl_node_info_on_chain")
 @JsonInclude(JsonInclude.Include.NON_NULL)
-@NoArgsConstructor
+@Data
 public class NodeInfoOnChainDto extends NodeInfoOnChain {
 
-    //@Builder
-    public NodeInfoOnChainDto(Integer nodeRank, String name, Long currentStake, String progress, String detailUrl,
-                              String publicKey, String address, Integer status, Long initPos, Long totalPos,
-                              Long maxAuthorize, String nodeProportion, String userProportion, String currentStakePercentage) {
-        super(nodeRank, name, currentStake, progress, detailUrl, publicKey, address, status, initPos, totalPos,
-                maxAuthorize, nodeProportion, userProportion, currentStakePercentage);
-    }
+    @Column(name = "fee_sharing_ratio")
+    private Integer feeSharingRatio;
+
+    @Column(name = "ontology_harbinger")
+    private Integer ontologyHarbinger;
+
+    private Integer risky;
+
+    @Column(name = "bad_actor")
+    private Integer badActor;
 
+    public NodeInfoOnChainDto() {
+
+    }
+    public NodeInfoOnChainDto(NodeInfoOnChainDto nodeInfoOnChain) {
+        super(nodeInfoOnChain);
+        this.feeSharingRatio = nodeInfoOnChain.getFeeSharingRatio();
+        this.ontologyHarbinger = nodeInfoOnChain.getOntologyHarbinger();
+        this.risky = nodeInfoOnChain.getRisky();
+        this.badActor = nodeInfoOnChain.getBadActor();
+    }
 }
\ No newline at end of file
diff --git a/back-end-projects/Explorer/src/main/resources/mapper/NodeInfoOnChainMapper.xml b/back-end-projects/Explorer/src/main/resources/mapper/NodeInfoOnChainMapper.xml
index 1c23c717..7989145f 100644
--- a/back-end-projects/Explorer/src/main/resources/mapper/NodeInfoOnChainMapper.xml
+++ b/back-end-projects/Explorer/src/main/resources/mapper/NodeInfoOnChainMapper.xml
@@ -28,21 +28,26 @@
     </cache>
 
     <select id="selectAllInfo" resultType="com.github.ontio.model.dto.NodeInfoOnChainDto" useCache="true">
-        SELECT node_rank,
-               name,
-               current_stake,
-               progress,
-               detail_url,
-               public_key,
-               address,
-               status,
-               init_pos,
-               total_pos,
-               max_authorize,
-               node_proportion,
-               user_proportion,
-               current_stake_percentage
-        FROM tbl_node_info_on_chain
+        SELECT a.node_rank,
+               a.name,
+               a.current_stake,
+               a.progress,
+               a.detail_url,
+               a.public_key,
+               a.address,
+               a.status,
+               a.init_pos,
+               a.total_pos,
+               a.max_authorize,
+               a.node_proportion,
+               a.user_proportion,
+               a.current_stake_percentage,
+               b.ontology_harbinger,
+               b.fee_sharing_ratio,
+               b.risky,
+               b.bad_actor
+        FROM tbl_node_info_on_chain a
+        LEFT JOIN tbl_node_info_off_chain b ON a.public_key = b.public_key
     </select>
 
     <select id="selectTotalStake" resultType="java.lang.Long" useCache="true">
diff --git a/back-end-projects/Explorer/src/main/resources/mapper/TxDetailMapper.xml b/back-end-projects/Explorer/src/main/resources/mapper/TxDetailMapper.xml
index edf5e9c9..20241277 100644
--- a/back-end-projects/Explorer/src/main/resources/mapper/TxDetailMapper.xml
+++ b/back-end-projects/Explorer/src/main/resources/mapper/TxDetailMapper.xml
@@ -148,17 +148,17 @@
         d.contract_hash as contractHash,
         c.type AS assetType
         FROM tbl_tx_detail d
-        INNER JOIN
-        (
-        SELECT DISTINCT tx_hash AS `hash`
-        FROM tbl_tx_detail_index
-        WHERE address = #{address}
-        <if test="assetName != '' and assetName != null">
-            AND asset_name = #{assetName}
-        </if>
-        ORDER BY desc_block_height, tx_hash, tx_index
-        LIMIT #{startIndex}, #{pageSize}
-        ) idx ON idx.hash = d.tx_hash
+<!--        INNER JOIN-->
+<!--        (-->
+<!--        SELECT DISTINCT tx_hash AS `hash`-->
+<!--        FROM tbl_tx_detail_index-->
+<!--        WHERE address = #{address}-->
+<!--        <if test="assetName != '' and assetName != null">-->
+<!--            AND asset_name = #{assetName}-->
+<!--        </if>-->
+<!--        ORDER BY desc_block_height, tx_hash, tx_index-->
+<!--        LIMIT #{startIndex}, #{pageSize}-->
+<!--        ) idx ON idx.hash = d.tx_hash-->
         LEFT JOIN tbl_contract c ON d.contract_hash = c.contract_hash
         WHERE (d.from_address = #{address}
         OR d.to_address = #{address})
@@ -167,6 +167,7 @@
         </if>
         AND d.event_type IN (2, 3)
         ORDER BY block_height DESC, block_index, tx_hash, tx_index
+        LIMIT #{startIndex}, #{pageSize}
     </select>
 
     <select id="selectTransferTxsByTime" resultType="com.github.ontio.model.dto.TransferTxDto">
diff --git a/back-end-projects/OntSynHandler/src/main/java/com/github/ontio/service/CommonService.java b/back-end-projects/OntSynHandler/src/main/java/com/github/ontio/service/CommonService.java
index 2f9efb71..4fff3eae 100644
--- a/back-end-projects/OntSynHandler/src/main/java/com/github/ontio/service/CommonService.java
+++ b/back-end-projects/OntSynHandler/src/main/java/com/github/ontio/service/CommonService.java
@@ -329,7 +329,7 @@ public int getRemoteBlockHeight() throws Exception {
      * @throws Exception
      */
     public JSONObject getBlockJsonByHeight(int height) throws Exception {
-        JSONObject blockObj = new JSONObject();
+        JSONObject blockObj;
         int tryTime = 1;
         while (true) {
             try {
@@ -611,7 +611,7 @@ public String getOepSymbol(Boolean isWasm, String contract, String tokenId) {
                 InvokeWasmCode tx = ontSdk.wasmvm().makeInvokeCodeTransaction(contract, ConstantParam.FUN_SYMBOL, invokeParams, Address.ZERO, 20000, 2500);
                 JSONObject jsonObject = (JSONObject) ontSdk.getConnect().sendRawTransactionPreExec(tx.toHexString());
                 String result = jsonObject.getString("Result");
-                symbol = new String(Helper.hexToBytes(result));
+                symbol = new String(Helper.hexToBytes(result.substring(2)));
             } else {
                 OntSdk ontSdk = ConstantParam.ONT_SDKSERVICE;
                 List<Object> paramList = new ArrayList<>();