diff --git a/src/main/java/com/baidu/hugegraph/structure/constant/AggregateType.java b/src/main/java/com/baidu/hugegraph/structure/constant/AggregateType.java
new file mode 100644
index 00000000..03d13de3
--- /dev/null
+++ b/src/main/java/com/baidu/hugegraph/structure/constant/AggregateType.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2017 HugeGraph Authors
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with this
+ * work for additional information regarding copyright ownership. The ASF
+ * licenses this file to You under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+package com.baidu.hugegraph.structure.constant;
+
+public enum AggregateType {
+
+    NONE(0, "none"),
+    MAX(1, "max"),
+    MIN(2, "min"),
+    SUM(3, "sum"),
+    OLD(4, "old");
+
+    private byte code = 0;
+    private String name = null;
+
+    AggregateType(int code, String name) {
+        assert code < 256;
+        this.code = (byte) code;
+        this.name = name;
+    }
+
+    public byte code() {
+        return this.code;
+    }
+
+    public String string() {
+        return this.name;
+    }
+
+    public boolean isNone() {
+        return this == NONE;
+    }
+
+    public boolean isMax() {
+        return this == MAX;
+    }
+
+    public boolean isMin() {
+        return this == MIN;
+    }
+
+    public boolean isSum() {
+        return this == SUM;
+    }
+
+    public boolean isNumber() {
+        return this.isMax() || this.isMin() || this.isSum();
+    }
+
+    public boolean isOld() {
+        return this == OLD;
+    }
+
+    public boolean isIndexable() {
+        return this == NONE || this == MAX || this == MIN || this == OLD;
+    }
+}
diff --git a/src/main/java/com/baidu/hugegraph/structure/schema/PropertyKey.java b/src/main/java/com/baidu/hugegraph/structure/schema/PropertyKey.java
index 735c6c29..e05cb090 100644
--- a/src/main/java/com/baidu/hugegraph/structure/schema/PropertyKey.java
+++ b/src/main/java/com/baidu/hugegraph/structure/schema/PropertyKey.java
@@ -21,6 +21,7 @@
 
 import com.baidu.hugegraph.driver.SchemaManager;
 import com.baidu.hugegraph.structure.SchemaElement;
+import com.baidu.hugegraph.structure.constant.AggregateType;
 import com.baidu.hugegraph.structure.constant.Cardinality;
 import com.baidu.hugegraph.structure.constant.DataType;
 import com.baidu.hugegraph.structure.constant.HugeType;
@@ -34,12 +35,15 @@ public class PropertyKey extends SchemaElement {
     private DataType dataType;
     @JsonProperty("cardinality")
     private Cardinality cardinality;
+    @JsonProperty("aggregate_type")
+    private AggregateType aggregateType;
 
     @JsonCreator
     public PropertyKey(@JsonProperty("name") String name) {
         super(name);
         this.dataType = DataType.TEXT;
         this.cardinality = Cardinality.SINGLE;
+        this.aggregateType = AggregateType.NONE;
     }
 
     @Override
@@ -55,12 +59,16 @@ public Cardinality cardinality() {
         return this.cardinality;
     }
 
+    public AggregateType aggregateType() {
+        return this.aggregateType;
+    }
+
     @Override
     public String toString() {
-        return String.format("{name=%s, cardinality=%s, " +
-                             "dataType=%s, properties=%s}",
-                             this.name, this.cardinality,
-                             this.dataType, this.properties);
+        return String.format("{name=%s, cardinality=%s, dataType=%s, " +
+                             "aggregateType=%s, properties=%s}",
+                             this.name, this.cardinality, this.dataType,
+                             this.aggregateType, this.properties);
     }
 
     public interface Builder extends SchemaBuilder<PropertyKey> {
@@ -95,6 +103,16 @@ public interface Builder extends SchemaBuilder<PropertyKey> {
 
         Builder valueSet();
 
+        Builder aggregateType(AggregateType aggregateType);
+
+        Builder calcSum();
+
+        Builder calcMax();
+
+        Builder calcMin();
+
+        Builder calcOld();
+
         Builder userdata(String key, Object val);
 
         Builder ifNotExist();
@@ -225,6 +243,32 @@ public Builder valueSet() {
             return this;
         }
 
+        @Override
+        public Builder aggregateType(AggregateType aggregateType) {
+            this.propertyKey.aggregateType = aggregateType;
+            return this;
+        }
+
+        @Override public Builder calcSum() {
+            this.propertyKey.aggregateType = AggregateType.SUM;
+            return this;
+        }
+
+        @Override public Builder calcMax() {
+            this.propertyKey.aggregateType = AggregateType.MAX;
+            return this;
+        }
+
+        @Override public Builder calcMin() {
+            this.propertyKey.aggregateType = AggregateType.MIN;
+            return this;
+        }
+
+        @Override public Builder calcOld() {
+            this.propertyKey.aggregateType = AggregateType.OLD;
+            return this;
+        }
+
         @Override
         public Builder userdata(String key, Object val) {
             E.checkArgumentNotNull(key, "The user data key can't be null");
diff --git a/src/test/java/com/baidu/hugegraph/api/PropertyKeyApiTest.java b/src/test/java/com/baidu/hugegraph/api/PropertyKeyApiTest.java
index 37333784..a5f3ad12 100644
--- a/src/test/java/com/baidu/hugegraph/api/PropertyKeyApiTest.java
+++ b/src/test/java/com/baidu/hugegraph/api/PropertyKeyApiTest.java
@@ -24,6 +24,7 @@
 import org.junit.After;
 import org.junit.Test;
 
+import com.baidu.hugegraph.structure.constant.AggregateType;
 import com.baidu.hugegraph.structure.constant.Cardinality;
 import com.baidu.hugegraph.structure.constant.DataType;
 import com.baidu.hugegraph.structure.schema.PropertyKey;
@@ -80,6 +81,80 @@ public void testCreateWithCardinality() {
         Assert.assertEquals(Cardinality.SET, propertyKey.cardinality());
     }
 
+    @Test
+    public void testCreateWithAggregateType() {
+        PropertyKey propertyKey = schema().propertyKey("name")
+                                          .asText().valueSingle()
+                                          .build();
+
+        propertyKey = propertyKeyAPI.create(propertyKey);
+
+        Assert.assertEquals("name", propertyKey.name());
+        Assert.assertEquals(DataType.TEXT, propertyKey.dataType());
+        Assert.assertEquals(Cardinality.SINGLE, propertyKey.cardinality());
+        Assert.assertEquals(AggregateType.NONE, propertyKey.aggregateType());
+
+        propertyKey = schema().propertyKey("no")
+                              .asText().valueSingle()
+                              .aggregateType(AggregateType.OLD)
+                              .build();
+
+        propertyKey = propertyKeyAPI.create(propertyKey);
+
+        Assert.assertEquals("no", propertyKey.name());
+        Assert.assertEquals(DataType.TEXT, propertyKey.dataType());
+        Assert.assertEquals(Cardinality.SINGLE, propertyKey.cardinality());
+        Assert.assertEquals(AggregateType.OLD, propertyKey.aggregateType());
+
+        propertyKey = schema().propertyKey("max")
+                              .asInt().valueSingle()
+                              .aggregateType(AggregateType.MAX)
+                              .build();
+
+        propertyKey = propertyKeyAPI.create(propertyKey);
+
+        Assert.assertEquals("max", propertyKey.name());
+        Assert.assertEquals(DataType.INT, propertyKey.dataType());
+        Assert.assertEquals(Cardinality.SINGLE, propertyKey.cardinality());
+        Assert.assertEquals(AggregateType.MAX, propertyKey.aggregateType());
+
+        propertyKey = schema().propertyKey("min")
+                              .asInt().valueSingle()
+                              .aggregateType(AggregateType.MIN)
+                              .build();
+
+        propertyKey = propertyKeyAPI.create(propertyKey);
+
+        Assert.assertEquals("min", propertyKey.name());
+        Assert.assertEquals(DataType.INT, propertyKey.dataType());
+        Assert.assertEquals(Cardinality.SINGLE, propertyKey.cardinality());
+        Assert.assertEquals(AggregateType.MIN, propertyKey.aggregateType());
+
+        propertyKey = schema().propertyKey("sum")
+                              .asInt().valueSingle()
+                              .aggregateType(AggregateType.SUM)
+                              .build();
+
+        propertyKey = propertyKeyAPI.create(propertyKey);
+
+        Assert.assertEquals("sum", propertyKey.name());
+        Assert.assertEquals(DataType.INT, propertyKey.dataType());
+        Assert.assertEquals(Cardinality.SINGLE, propertyKey.cardinality());
+        Assert.assertEquals(AggregateType.SUM, propertyKey.aggregateType());
+
+        propertyKey = schema().propertyKey("total")
+                              .asInt().valueSingle()
+                              .aggregateType(AggregateType.SUM)
+                              .build();
+
+        propertyKey = propertyKeyAPI.create(propertyKey);
+
+        Assert.assertEquals("total", propertyKey.name());
+        Assert.assertEquals(DataType.INT, propertyKey.dataType());
+        Assert.assertEquals(Cardinality.SINGLE, propertyKey.cardinality());
+        Assert.assertEquals(AggregateType.SUM, propertyKey.aggregateType());
+    }
+
     @Test
     public void testCreateWithInvalidName() {
         Utils.assertResponseError(400, () -> {