diff --git a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/CatalogPrivEntry.java b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/CatalogPrivEntry.java
index 97fde3ae5d..a0ff74d080 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/CatalogPrivEntry.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/CatalogPrivEntry.java
@@ -22,6 +22,7 @@ import org.apache.doris.common.AnalysisException;
 import org.apache.doris.common.CaseSensibility;
 import org.apache.doris.common.FeMetaVersion;
 import org.apache.doris.common.PatternMatcher;
+import org.apache.doris.common.PatternMatcherException;
 import org.apache.doris.common.PatternMatcherWrapper;
 import org.apache.doris.common.io.Text;
 import org.apache.doris.datasource.InternalCatalog;
@@ -118,6 +119,11 @@ public class CatalogPrivEntry extends PrivEntry {
         return compareAssist(origCtl, otherEntry.origCtl);
     }
 
+    @Override
+    protected PrivEntry copy() throws AnalysisException, PatternMatcherException {
+        return CatalogPrivEntry.create(this.getOrigCtl(), this.getPrivSet().copy());
+    }
+
     @Override
     public boolean keyMatch(PrivEntry other) {
         if (!(other instanceof CatalogPrivEntry)) {
diff --git a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/DbPrivEntry.java b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/DbPrivEntry.java
index a08fb70cdd..b7464ac546 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/DbPrivEntry.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/DbPrivEntry.java
@@ -22,6 +22,7 @@ import org.apache.doris.cluster.ClusterNamespace;
 import org.apache.doris.common.AnalysisException;
 import org.apache.doris.common.CaseSensibility;
 import org.apache.doris.common.PatternMatcher;
+import org.apache.doris.common.PatternMatcherException;
 import org.apache.doris.common.io.Text;
 
 import java.io.DataInput;
@@ -126,4 +127,8 @@ public class DbPrivEntry extends CatalogPrivEntry {
         isAnyDb = origDb.equals(ANY_DB);
     }
 
+    @Override
+    protected PrivEntry copy() throws AnalysisException, PatternMatcherException {
+        return DbPrivEntry.create(this.getOrigCtl(), this.getOrigDb(), this.getPrivSet().copy());
+    }
 }
diff --git a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/GlobalPrivEntry.java b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/GlobalPrivEntry.java
index 5281acb86a..658f5c46df 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/GlobalPrivEntry.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/GlobalPrivEntry.java
@@ -18,6 +18,8 @@
 package org.apache.doris.mysql.privilege;
 
 import org.apache.doris.analysis.UserIdentity;
+import org.apache.doris.common.AnalysisException;
+import org.apache.doris.common.PatternMatcherException;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
@@ -72,4 +74,9 @@ public class GlobalPrivEntry extends PrivEntry {
         password = new byte[passwordLen];
         in.readFully(password);
     }
+
+    @Override
+    protected PrivEntry copy() throws AnalysisException, PatternMatcherException {
+        return GlobalPrivEntry.create(this.getPrivSet().copy());
+    }
 }
diff --git a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/PrivEntry.java b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/PrivEntry.java
index ea2ff6938d..6ac321d1de 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/PrivEntry.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/PrivEntry.java
@@ -18,6 +18,7 @@
 package org.apache.doris.mysql.privilege;
 
 import org.apache.doris.analysis.UserIdentity;
+import org.apache.doris.common.AnalysisException;
 import org.apache.doris.common.CaseSensibility;
 import org.apache.doris.common.PatternMatcher;
 import org.apache.doris.common.PatternMatcherException;
@@ -187,4 +188,6 @@ public abstract class PrivEntry implements Comparable<PrivEntry> {
         }
         return 0;
     }
+
+    protected abstract PrivEntry copy() throws AnalysisException, PatternMatcherException;
 }
diff --git a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/PrivTable.java b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/PrivTable.java
index a2162a1d9e..8da712b5c6 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/PrivTable.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/PrivTable.java
@@ -17,9 +17,11 @@
 
 package org.apache.doris.mysql.privilege;
 
+import org.apache.doris.common.AnalysisException;
 import org.apache.doris.common.DdlException;
 import org.apache.doris.common.ErrorCode;
 import org.apache.doris.common.ErrorReport;
+import org.apache.doris.common.PatternMatcherException;
 import org.apache.doris.common.io.Text;
 
 import com.google.common.collect.Lists;
@@ -63,6 +65,20 @@ public abstract class PrivTable {
      */
     public PrivEntry addEntry(PrivEntry newEntry,
             boolean errOnExist, boolean errOnNonExist) throws DdlException {
+        return addEntry(newEntry, errOnExist, errOnNonExist, false);
+    }
+
+    public PrivEntry addEntry(PrivEntry entry, boolean errOnExist, boolean errOnNonExist, boolean isMerge)
+            throws DdlException {
+        PrivEntry newEntry = entry;
+        if (isMerge) {
+            try {
+                newEntry = entry.copy();
+            } catch (AnalysisException | PatternMatcherException e) {
+                LOG.error("exception when copy PrivEntry", e);
+            }
+        }
+
         PrivEntry existingEntry = getExistingEntry(newEntry);
         if (existingEntry == null) {
             if (errOnNonExist) {
@@ -201,7 +217,7 @@ public abstract class PrivTable {
     public void merge(PrivTable privTable) {
         for (PrivEntry entry : privTable.entries) {
             try {
-                addEntry(entry, false, false);
+                addEntry(entry, false, false, true);
             } catch (DdlException e) {
                 //will no exception
                 LOG.debug(e.getMessage());
diff --git a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/ResourcePrivEntry.java b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/ResourcePrivEntry.java
index c85e01867e..a41f380308 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/ResourcePrivEntry.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/ResourcePrivEntry.java
@@ -77,6 +77,11 @@ public class ResourcePrivEntry extends PrivEntry {
         return origResource.compareTo(otherEntry.origResource);
     }
 
+    @Override
+    protected PrivEntry copy() throws AnalysisException, PatternMatcherException {
+        return ResourcePrivEntry.create(this.getOrigResource(), this.getPrivSet().copy());
+    }
+
     @Override
     public boolean keyMatch(PrivEntry other) {
         if (!(other instanceof ResourcePrivEntry)) {
diff --git a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/TablePrivEntry.java b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/TablePrivEntry.java
index ce1b5a2ca2..c89104cde1 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/TablePrivEntry.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/TablePrivEntry.java
@@ -123,4 +123,8 @@ public class TablePrivEntry extends DbPrivEntry {
         isAnyTbl = origTbl.equals(ANY_TBL);
     }
 
+    @Override
+    protected PrivEntry copy() throws AnalysisException, PatternMatcherException {
+        return TablePrivEntry.create(this.getOrigCtl(), this.getOrigDb(), this.getOrigTbl(), this.getPrivSet().copy());
+    }
 }
diff --git a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/WorkloadGroupPrivEntry.java b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/WorkloadGroupPrivEntry.java
index a9762b4b32..080d0e1f7c 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/WorkloadGroupPrivEntry.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/WorkloadGroupPrivEntry.java
@@ -69,6 +69,11 @@ public class WorkloadGroupPrivEntry extends PrivEntry {
         return origWorkloadGroupName.compareTo(otherEntry.origWorkloadGroupName);
     }
 
+    @Override
+    protected PrivEntry copy() throws AnalysisException, PatternMatcherException {
+        return WorkloadGroupPrivEntry.create(this.getOrigWorkloadGroupName(), this.getPrivSet().copy());
+    }
+
     @Override
     public boolean keyMatch(PrivEntry other) {
         if (!(other instanceof WorkloadGroupPrivEntry)) {