diff --git a/hugegraph-server/hugegraph-core/src/main/java/org/apache/hugegraph/backend/query/ConditionQuery.java b/hugegraph-server/hugegraph-core/src/main/java/org/apache/hugegraph/backend/query/ConditionQuery.java
index 8a5706a774..063d23aa6d 100644
--- a/hugegraph-server/hugegraph-core/src/main/java/org/apache/hugegraph/backend/query/ConditionQuery.java
+++ b/hugegraph-server/hugegraph-core/src/main/java/org/apache/hugegraph/backend/query/ConditionQuery.java
@@ -288,11 +288,13 @@ public <T> T condition(Object key) {
             return value;
         }
 
+        boolean initialized = false;
         Set<Object> intersectValues = InsertionOrderUtil.newSet();
         for (Object value : valuesEQ) {
             List<Object> valueAsList = ImmutableList.of(value);
-            if (intersectValues.isEmpty()) {
+            if (!initialized) {
                 intersectValues.addAll(valueAsList);
+                initialized = true;
             } else {
                 CollectionUtil.intersectWithModify(intersectValues,
                                                    valueAsList);
@@ -301,8 +303,9 @@ public <T> T condition(Object key) {
         for (Object value : valuesIN) {
             @SuppressWarnings("unchecked")
             List<Object> valueAsList = (List<Object>) value;
-            if (intersectValues.isEmpty()) {
+            if (!initialized) {
                 intersectValues.addAll(valueAsList);
+                initialized = true;
             } else {
                 CollectionUtil.intersectWithModify(intersectValues,
                                                    valueAsList);
diff --git a/hugegraph-server/hugegraph-test/src/main/java/org/apache/hugegraph/core/EdgeCoreTest.java b/hugegraph-server/hugegraph-test/src/main/java/org/apache/hugegraph/core/EdgeCoreTest.java
index 265d408742..6bec6dc06f 100644
--- a/hugegraph-server/hugegraph-test/src/main/java/org/apache/hugegraph/core/EdgeCoreTest.java
+++ b/hugegraph-server/hugegraph-test/src/main/java/org/apache/hugegraph/core/EdgeCoreTest.java
@@ -4646,6 +4646,29 @@ public void testQueryInEdgesOfVertexByLabels() {
         Assert.assertEquals(3L, size);
     }
 
+    @Test
+    public void testQueryInEdgesOfVertexByConflictingLabels() {
+        HugeGraph graph = graph();
+        init18Edges();
+
+        long direct = graph.traversal().V().inE("created")
+                           .hasLabel("created", "look")
+                           .hasLabel("authored")
+                           .count().next();
+        Assert.assertEquals(0L, direct);
+
+        long matched = graph.traversal().V()
+                            .match(__.as("start1")
+                                     .inE("created")
+                                     .as("m1"))
+                            .select("m1")
+                            .hasLabel("created", "look")
+                            .hasLabel("authored")
+                            .count().next();
+        Assert.assertEquals(0L, matched);
+        Assert.assertEquals(matched, direct);
+    }
+
     @Test
     public void testQueryInEdgesOfVertexBySortkey() {
         HugeGraph graph = graph();
diff --git a/hugegraph-server/hugegraph-test/src/main/java/org/apache/hugegraph/unit/core/QueryTest.java b/hugegraph-server/hugegraph-test/src/main/java/org/apache/hugegraph/unit/core/QueryTest.java
index 88b161d32a..7d48084dbf 100644
--- a/hugegraph-server/hugegraph-test/src/main/java/org/apache/hugegraph/unit/core/QueryTest.java
+++ b/hugegraph-server/hugegraph-test/src/main/java/org/apache/hugegraph/unit/core/QueryTest.java
@@ -17,8 +17,10 @@
 
 package org.apache.hugegraph.unit.core;
 
+import org.apache.hugegraph.backend.id.Id;
 import org.apache.hugegraph.backend.id.IdGenerator;
 import org.apache.hugegraph.backend.query.Aggregate.AggregateFunc;
+import org.apache.hugegraph.backend.query.Condition;
 import org.apache.hugegraph.backend.query.ConditionQuery;
 import org.apache.hugegraph.backend.query.IdPrefixQuery;
 import org.apache.hugegraph.backend.query.IdQuery;
@@ -30,6 +32,7 @@
 import org.apache.hugegraph.type.define.HugeKeys;
 import org.junit.Test;
 
+import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 
@@ -45,6 +48,53 @@ public void testOrderBy() {
                             query.orders());
     }
 
+    @Test
+    public void testConditionWithEqAndIn() {
+        Id label1 = IdGenerator.of(1);
+        Id label2 = IdGenerator.of(2);
+
+        ConditionQuery query = new ConditionQuery(HugeType.EDGE);
+        query.eq(HugeKeys.LABEL, label1);
+        query.query(Condition.in(HugeKeys.LABEL,
+                                 ImmutableList.of(label1, label2)));
+
+        Assert.assertEquals(label1, query.condition(HugeKeys.LABEL));
+    }
+
+    @Test
+    public void testConditionWithConflictingEqAndIn() {
+        Id label1 = IdGenerator.of(1);
+        Id label2 = IdGenerator.of(2);
+        Id label3 = IdGenerator.of(3);
+
+        ConditionQuery query = new ConditionQuery(HugeType.EDGE);
+        query.eq(HugeKeys.LABEL, label1);
+        query.eq(HugeKeys.LABEL, label2);
+        query.query(Condition.in(HugeKeys.LABEL,
+                                 ImmutableList.of(label1, label3)));
+
+        Assert.assertNull(query.condition(HugeKeys.LABEL));
+    }
+
+    @Test
+    public void testConditionWithMultipleMatchedInValues() {
+        Id label1 = IdGenerator.of(1);
+        Id label2 = IdGenerator.of(2);
+        Id label3 = IdGenerator.of(3);
+        Id label4 = IdGenerator.of(4);
+
+        ConditionQuery query = new ConditionQuery(HugeType.EDGE);
+        query.query(Condition.in(HugeKeys.LABEL,
+                                 ImmutableList.of(label1, label2, label3)));
+        query.query(Condition.in(HugeKeys.LABEL,
+                                 ImmutableList.of(label1, label2, label4)));
+
+        Assert.assertThrows(IllegalStateException.class,
+                            () -> query.condition(HugeKeys.LABEL),
+                            e -> Assert.assertContains("Illegal key 'LABEL'",
+                                                       e.getMessage()));
+    }
+
     @Test
     public void testToString() {
         Query query = new Query(HugeType.VERTEX);