diff --git a/build.gradle b/build.gradle
index 32f8116a4..c8bf7f41a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -35,7 +35,7 @@ ext {
 // integrationTest.mustRunAfter test
 allprojects {
     group = 'org.fisco-bcos.java-sdk'
-    version = '3.2.2'
+    version = '3.2.3-SNAPSHOT'
 
     apply plugin: 'maven-publish'
     apply plugin: 'idea'
diff --git a/src/main/java/org/fisco/bcos/sdk/v3/contract/auth/manager/AuthManager.java b/src/main/java/org/fisco/bcos/sdk/v3/contract/auth/manager/AuthManager.java
index 72eff7f7c..b94e0316c 100644
--- a/src/main/java/org/fisco/bcos/sdk/v3/contract/auth/manager/AuthManager.java
+++ b/src/main/java/org/fisco/bcos/sdk/v3/contract/auth/manager/AuthManager.java
@@ -261,15 +261,25 @@ private void checkSetConsensusWeightParams(String node, BigInteger weight, boole
                         PrecompiledRetCode.CODE_ADD_SEALER_SHOULD_IN_OBSERVER.getCode());
             }
             SyncStatus syncStatus = client.getSyncStatus();
-            BigInteger blockNumber = client.getBlockNumber().getBlockNumber();
-            boolean anyMatch =
-                    syncStatus.getSyncStatus().getPeers().stream()
-                            .anyMatch(
-                                    peersInfo ->
-                                            peersInfo.getNodeId().equals(node)
-                                                    && peersInfo.getBlockNumber()
-                                                            >= (blockNumber.longValue()
-                                                                    - SYNC_KEEP_UP_THRESHOLD));
+            // sdk block number
+            BigInteger highestNumber =
+                    BigInteger.valueOf(syncStatus.getSyncStatus().getKnownHighestNumber());
+            boolean anyMatch;
+            if (syncStatus.getSyncStatus().getNodeId().equals(node)) {
+                // sdk connect observer to be added to sealerList
+                anyMatch =
+                        syncStatus.getSyncStatus().getBlockNumber()
+                                >= highestNumber.longValue() - SYNC_KEEP_UP_THRESHOLD;
+            } else {
+                anyMatch =
+                        syncStatus.getSyncStatus().getPeers().stream()
+                                .anyMatch(
+                                        peersInfo ->
+                                                peersInfo.getNodeId().equals(node)
+                                                        && peersInfo.getBlockNumber()
+                                                                >= (highestNumber.longValue()
+                                                                        - SYNC_KEEP_UP_THRESHOLD));
+            }
             if (!anyMatch) {
                 throw new ContractException(
                         "Observer should keep up the block number sync threshold: "
diff --git a/src/main/java/org/fisco/bcos/sdk/v3/contract/precompiled/consensus/ConsensusService.java b/src/main/java/org/fisco/bcos/sdk/v3/contract/precompiled/consensus/ConsensusService.java
index 3668596f5..e952bf840 100644
--- a/src/main/java/org/fisco/bcos/sdk/v3/contract/precompiled/consensus/ConsensusService.java
+++ b/src/main/java/org/fisco/bcos/sdk/v3/contract/precompiled/consensus/ConsensusService.java
@@ -75,15 +75,25 @@ public RetCode addSealer(String nodeId, BigInteger weight) throws ContractExcept
                     PrecompiledRetCode.CODE_ADD_SEALER_SHOULD_IN_OBSERVER.getCode());
         }
         SyncStatus syncStatus = client.getSyncStatus();
-        BigInteger blockNumber = client.getBlockNumber().getBlockNumber();
-        boolean anyMatch =
-                syncStatus.getSyncStatus().getPeers().stream()
-                        .anyMatch(
-                                peersInfo ->
-                                        peersInfo.getNodeId().equals(nodeId)
-                                                && peersInfo.getBlockNumber()
-                                                        >= (blockNumber.longValue()
-                                                                - SYNC_KEEP_UP_THRESHOLD));
+        // sdk block number
+        BigInteger highestNumber =
+                BigInteger.valueOf(syncStatus.getSyncStatus().getKnownHighestNumber());
+        boolean anyMatch;
+        if (syncStatus.getSyncStatus().getNodeId().equals(nodeId)) {
+            // sdk connect observer to be added to sealerList
+            anyMatch =
+                    syncStatus.getSyncStatus().getBlockNumber()
+                            >= highestNumber.longValue() - SYNC_KEEP_UP_THRESHOLD;
+        } else {
+            anyMatch =
+                    syncStatus.getSyncStatus().getPeers().stream()
+                            .anyMatch(
+                                    peersInfo ->
+                                            peersInfo.getNodeId().equals(nodeId)
+                                                    && peersInfo.getBlockNumber()
+                                                            >= (highestNumber.longValue()
+                                                                    - SYNC_KEEP_UP_THRESHOLD));
+        }
         if (!anyMatch) {
             throw new ContractException(
                     "Observer should keep up the block number sync threshold: "
diff --git a/src/test/java/org/fisco/bcos/sdk/v3/test/transaction/contract/PrecompiledTest.java b/src/test/java/org/fisco/bcos/sdk/v3/test/transaction/contract/PrecompiledTest.java
index 01bad6053..431d9e498 100644
--- a/src/test/java/org/fisco/bcos/sdk/v3/test/transaction/contract/PrecompiledTest.java
+++ b/src/test/java/org/fisco/bcos/sdk/v3/test/transaction/contract/PrecompiledTest.java
@@ -150,6 +150,8 @@ public void mockGetSyncStatusRequest(long number, String... nodeIds) {
                     SyncStatus syncStatus = new SyncStatus();
                     SyncStatus.SyncStatusInfo syncStatusInfo = new SyncStatus.SyncStatusInfo();
                     List<SyncStatus.PeersInfo> peersInfos = new ArrayList<>();
+                    syncStatusInfo.setNodeId(nodeIds[0]);
+                    syncStatusInfo.setKnownHighestNumber((int) number);
                     for (String nodeId : nodeIds) {
                         SyncStatus.PeersInfo peersInfo = new SyncStatus.PeersInfo();
                         peersInfo.setBlockNumber(number);