diff --git a/apm-protocol/apm-ui-query/pom.xml b/apm-protocol/apm-ui-protocol/pom.xml
similarity index 82%
rename from apm-protocol/apm-ui-query/pom.xml
rename to apm-protocol/apm-ui-protocol/pom.xml
index f67c5c86e..0e7e75784 100644
--- a/apm-protocol/apm-ui-query/pom.xml
+++ b/apm-protocol/apm-ui-protocol/pom.xml
@@ -27,7 +27,13 @@
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
-    <artifactId>apm-ui-query</artifactId>
+    <artifactId>apm-ui-protocol</artifactId>
 
-
-</project>
\ No newline at end of file
+    <dependencies>
+        <dependency>
+            <groupId>com.graphql-java</groupId>
+            <artifactId>graphql-java</artifactId>
+            <version>6.0</version>
+        </dependency>
+    </dependencies>
+</project>
diff --git a/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/README.md b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/README.md
new file mode 100644
index 000000000..60ddb04aa
--- /dev/null
+++ b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/README.md
@@ -0,0 +1,41 @@
+# Abstract
+**apm-ui-protocol** declares all services, using GraphQL API style, which provide by Collector UI module.
+
+## Services
+### [Common](common.graphqls)
+
+Include common objects, which used in global
+
+### [Overview Layer Service](overview-layer.graphqls)
+
+Query data without specific application, server or service. It includes info for overview the whole cluster.
+
+### [Application Layer Service](application-layer.graphqls)
+
+Query application related data with specific application code.
+
+### [Server Layer Service](server-layer.graphqls)
+
+Query server related data with specific server id.
+
+### [Service Layer Service](service-layer.graphqls)
+
+Query service related data with specific service id
+
+### [Trace Service](trace.graphqls)
+
+Query trace by some conditions.
+
+### [Alarm Service](alarm.graphqls)
+
+Query alarm info.
+
+## Version
+v1alpha1
+
+### Versioning
+Use URI Versioning, to follow the most straightforward approach, 
+though it does violate the principle that a URI should refer to a unique resource.
+
+e.g.
+http://collector.host/graphql/v1alpha1
diff --git a/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/alarm.graphqls b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/alarm.graphqls
new file mode 100644
index 000000000..b63946d8b
--- /dev/null
+++ b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/alarm.graphqls
@@ -0,0 +1,15 @@
+type AlarmItem {
+    content: String!
+    startTime: String!
+    alertType: AlarmType!
+}
+
+enum AlarmType {
+    APPLICATION,
+    SERVER,
+    SERVICE
+}
+
+extend type Query {
+    loadAlertList(keyword: String, alertType: AlarmType, duration:Duration!):[AlarmItem]
+}
\ No newline at end of file
diff --git a/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/application-layer.graphqls b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/application-layer.graphqls
new file mode 100644
index 000000000..ef9fc7007
--- /dev/null
+++ b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/application-layer.graphqls
@@ -0,0 +1,37 @@
+# ApplicationNode represents this node is under monitoring by agent.
+type ApplicationNode implements Node {
+    id: ID!
+    name: String!
+    type: String
+    # Success rate of all incoming requests.
+    # Max value is 100.
+    # 2 Digits after floating point.
+    sla: Float!
+    # The number of incoming calls
+    calls: Long!
+    # ref: http://www.apdex.org/
+    # Max value is 1
+    # 2 Digits after floating point.
+    apdex: Float!
+    # The number of servers in the application code
+    numOfServer: Int!
+    # The number of servers alerting
+    numOfServerAlarm: Int!
+    # The number of services alerting
+    numOfServiceAlarm: Int!
+}
+
+# The conjectural node generated by exit span
+type ConjecturalNode implements Node {
+    id: ID!
+    name: String!
+    type: String
+}
+
+
+extend type Query {
+  getAllApplication(duration: Duration!): [ApplicationNode]
+  getApplicationTopology(applicationId: ID!, duration: Duration!): Topology
+  getSlowService(applicationId: ID!, duration: Duration!): [ServiceInfo!]
+  getServerThroughput(applicationId: ID!, duration: Duration!): [AppServerInfo!]
+}
diff --git a/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/common.graphqls b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/common.graphqls
new file mode 100644
index 000000000..853f36258
--- /dev/null
+++ b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/common.graphqls
@@ -0,0 +1,88 @@
+schema {
+    query: Query
+}
+
+#Root node
+type Query {
+    version: String
+}
+
+# The Duration defines the start and end time for each query operation.
+# Fields: `start` and `end`
+#   represents the time span. And each of them matches the step.
+#   ref https://www.ietf.org/rfc/rfc3339.txt
+#   The time formats are
+#       `SECOND` step: yyyy-MM-dd HHmmss
+#       `MINUTE` step: yyyy-MM-dd HHmm
+#       `HOUR` step: yyyy-MM-dd HH
+#       `DAY` step: yyyy-MM-dd
+#       `MONTH` step: yyyy-MM
+# Field: `step`
+#   represents the accurate time point.
+# e.g.
+#   if step==HOUR , start=2017-11-08 09, end=2017-11-08 19
+#   then
+#       metrics from the following time points expected
+#       2017-11-08 9:00 -> 2017-11-08 19:00
+#       there are 11 time points (hours) in the time span.
+input Duration {
+    start: String!
+    end: String!
+    step: Step!
+}
+
+enum Step {
+    MONTH
+    DAY
+    HOUR
+    MINUTE
+    SECOND
+}
+
+######################################
+# Common Metrics and Trends
+######################################
+type ResponseTimeTrend {
+    trendList: [Int!]
+}
+
+type ThroughputTrend {
+    trendList: [Int!]
+}
+
+type SLATrend {
+    trendList: [Int!]
+}
+
+# The overview topology of the whole application cluster or services,
+type Topology {
+    nodes: [Node]!
+    calls: [Call]
+}
+
+# The base Node of all node types in topology
+interface Node {
+    # The global id of each node,
+    # 1. `Application ID` represents application under monitoring
+    # 2. `Peer ID` string represents the conjectural dependency.
+    id: ID!
+    # Application Code or literal Peer
+    name: String!
+    # The type name
+    # 1. The most important component in the application, from service provider perspective.
+    # 2. Conjectural dependent component, e.g. MySQL, Redis, Kafka
+    type: String
+}
+
+# The Call represents a directed distributed call,
+# from the `source` to the `target`.
+type Call {
+    source: ID!
+    target: ID!
+    isAlert: Boolean
+    # The protocol and tech stack used in this distributed call
+    callType: String!
+    callsPerSec: Int!
+    # Unit: millisecond
+    responseTimePerSec: Int!
+}
diff --git a/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/overview-layer.graphqls b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/overview-layer.graphqls
new file mode 100644
index 000000000..e7b0bc2d6
--- /dev/null
+++ b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/overview-layer.graphqls
@@ -0,0 +1,37 @@
+# Query the cluster brief based on the given duration
+type ClusterBrief {
+    numOfApplication: Int
+    numOfService: Int
+    numOfDatabase: Int
+    numOfCache: Int
+    numOfMQ: Int
+}
+
+# Query the trend of alarm rate based on the given duration
+type AlarmTrend {
+    numOfAlarmRate: [Int]!
+}
+
+# Query all conjectural applications based on the given duration
+# All applications here are not installed agent.
+type ConjecturalAppBrief {
+    apps: [ConjecturalApp!]
+}
+
+# The basic info of the conjectural application,
+# includes the type and num of same type application
+type ConjecturalApp {
+    # The display name of the application
+    # e.g. MySQL, RocketMQ, Kafka, Nginx
+    name: String!
+    num: Int!
+}
+
+extend type Query {
+    getClusterTopology(duration: Duration!): Topology
+    getClusterBrief(duration: Duration!): ClusterBrief
+    getAlarmTrend(duration: Duration!): AlarmTrend
+    getConjecturalApps(duration: Duration!): ConjecturalAppBrief
+    getTopNSlowService(duration: Duration!, topN: Int!): [ServiceInfo!]
+    getTopNServerThroughput(duration: Duration!, topN: Int!): [AppServerInfo!]
+}
diff --git a/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/server-layer.graphqls b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/server-layer.graphqls
new file mode 100644
index 000000000..eac33a7dc
--- /dev/null
+++ b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/server-layer.graphqls
@@ -0,0 +1,42 @@
+# The server info.
+# At here, `Server` represents a process in OS,
+# e.g.
+#   1. Spring boot application
+#   2. A Tomcat server instance
+type AppServerInfo {
+    id: ID!
+    name: String!
+    tps: Int!
+    os: String
+    host: String
+    pid: Int
+    IPv4: String
+    IPv6: String
+}
+
+type CPUTrend {
+    cost: [Int!]
+}
+
+# The gc trend represents the numbers of Garbage Collector execution
+type GCTrend {
+    youngGC: [Int!]
+    oldGC: [Int!]
+}
+
+# The memory used and max limit in heap and noheap space.
+type MemoryTrend {
+    heap: [Int!]
+    maxHeap: [Int!]
+    noheap: [Int!]
+    maxNoheap: [Int!]
+}
+
+extend type Query {
+    searchServer(keyword: String!, duration: Duration!): [AppServerInfo]
+    getServerResponseTimeTrend(serverId: ID!, duration: Duration!): ResponseTimeTrend
+    getServerTPSTrend(serverId: ID!, duration: Duration!): ThroughputTrend
+    getCPUTrend(serverId: ID!, duration: Duration!): CPUTrend
+    getGCTrend(serverId: ID!, duration: Duration!): GCTrend
+    getMemoryTrend(serverId: ID!, duration: Duration!): MemoryTrend
+}
\ No newline at end of file
diff --git a/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/service-layer.graphqls b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/service-layer.graphqls
new file mode 100644
index 000000000..3e33c8f9e
--- /dev/null
+++ b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/service-layer.graphqls
@@ -0,0 +1,35 @@
+type ServiceNode implements Node {
+    id: ID!
+    name: String!
+    type: String
+    # Success rate of all incoming requests.
+    # Max value is 100.
+    # 2 Digits after floating point.
+    sla: Float!
+    # The number of incoming calls
+    calls: Long!
+    # The number of services alerting
+    numOfServiceAlarm: Int!
+}
+
+type ServiceInfo {
+    id: ID!
+    name: String
+    # The unit is millisecond.
+    avgResponseTime: Int!
+    tps: Int!
+}
+
+type TraceItem {
+    time: String!
+    entry: String!
+    duration: Int!
+}
+
+extend type Query {
+    searchService(keyword: String!, duration: Duration!): [ServiceNode]
+    getServiceResponseTimeTrend(serviceId: ID!, duration: Duration!): ResponseTimeTrend
+    getServiceTPSTrend(serviceId: ID!, duration: Duration!): ThroughputTrend
+    getServiceSLATrend(serviceId: ID!, duration: Duration!): SLATrend
+    getServiceTopology(serviceId: ID!, duration: Duration!): Topology
+}
diff --git a/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/trace.graphqls b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/trace.graphqls
new file mode 100644
index 000000000..4e2e1a0ec
--- /dev/null
+++ b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/trace.graphqls
@@ -0,0 +1,89 @@
+# The list of traces
+type TraceBrief {
+  traces: [BasicTrace!]
+}
+
+# Trace basic info
+type BasicTrace {
+   operationName: String!
+   duration: Int!
+   start: String!
+   isError: Boolean
+   traceId: String
+}
+
+# Represent the conditions used for query TraceBrief
+input TraceQueryCondition {
+  applicationCodes: [String!]
+  traceId: String
+  operationName: String
+  # The time range of traces started
+  queryDuration: Duration
+  # The mix time of trace
+  minTraceDuration: Int
+  # The max time of trace
+  maxTraceDuration: Int
+  topN: Boolean
+  needTotal: Int
+}
+
+enum QueryOrder {
+  BY_START_TIME
+  BY_DURATION
+}
+
+# The trace represents a distributed trace, includes all segments and spans.
+type Trace {
+  traceId: ID!
+  segments: [Segment!]
+}
+
+type Segment {
+  segmentId: ID!
+  appName: String!
+  isSizeLimited: Boolean!
+  spans: [Span!]!
+}
+
+type Span {
+  refs: [Ref!]
+  spanId: Int!
+  parentSpanId: Int!
+  startTime: Long!
+  endTime: Long!
+  operationName: String
+  # There are three span types: Local, Entry and Exit
+  type: String!
+  # Peer network id, e.g. host+port, ip+port
+  peer: String
+  component: String
+  isError: Boolean
+  # There are 5 layers: Unknown, Database, RPCFramework, Http, MQ and Cache
+  layer: String
+  tags: [KeyValue!]
+  logs: [LogEntity!]
+}
+
+# Ref represents the link between the segment and its parents.
+type Ref {
+  parentSegmentId: ID!
+  parentSpanId: Int!
+  # Ref type represents why did the ref happen.
+  # Include: 1) CrossProcess 2) CrossThread
+  type: String!
+}
+
+type KeyValue {
+  key: String!
+  value: String
+}
+
+type LogEntity {
+  time: String
+  data: [KeyValue!]
+}
+
+extend type Query {
+   queryBasicTraces(condition: TraceQueryCondition): TraceBrief
+   queryTrace(traceId: ID!): Trace
+}
\ No newline at end of file
diff --git a/apm-protocol/apm-ui-protocol/src/test/java/org/apache/skywalking/apm/ui/protocol/GraphQLScriptTest.java b/apm-protocol/apm-ui-protocol/src/test/java/org/apache/skywalking/apm/ui/protocol/GraphQLScriptTest.java
new file mode 100644
index 000000000..f017d6844
--- /dev/null
+++ b/apm-protocol/apm-ui-protocol/src/test/java/org/apache/skywalking/apm/ui/protocol/GraphQLScriptTest.java
@@ -0,0 +1,57 @@
+/*
+ * 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 org.apache.skywalking.apm.ui.protocol;
+
+import graphql.schema.idl.EchoingWiringFactory;
+import graphql.schema.idl.RuntimeWiring;
+import graphql.schema.idl.SchemaGenerator;
+import graphql.schema.idl.SchemaParser;
+import graphql.schema.idl.TypeDefinitionRegistry;
+import java.io.File;
+import org.junit.Test;
+
+import static org.junit.Assert.assertTrue;
+
+public class GraphQLScriptTest {
+    
+    @Test
+    public void assertScriptFormat() {
+        SchemaParser schemaParser = new SchemaParser();
+        SchemaGenerator schemaGenerator = new SchemaGenerator();
+    
+        TypeDefinitionRegistry typeRegistry = new TypeDefinitionRegistry();
+        typeRegistry.merge(schemaParser.parse(loadSchema("common.graphqls")));
+        typeRegistry.merge(schemaParser.parse(loadSchema("trace.graphqls")));
+        typeRegistry.merge(schemaParser.parse(loadSchema("overview-layer.graphqls")));
+        typeRegistry.merge(schemaParser.parse(loadSchema("application-layer.graphqls")));
+        typeRegistry.merge(schemaParser.parse(loadSchema("server-layer.graphqls")));
+        typeRegistry.merge(schemaParser.parse(loadSchema("service-layer.graphqls")));
+        typeRegistry.merge(schemaParser.parse(loadSchema("alarm.graphqls")));
+        RuntimeWiring wiring = buildRuntimeWiring();
+        assertTrue(schemaGenerator.makeExecutableSchema(typeRegistry, wiring).getAllTypesAsList().size() > 0);
+    }
+    
+    private File loadSchema(final String s) {
+        return new File(GraphQLScriptTest.class.getClassLoader().getResource("ui-graphql/" + s).getFile());
+    }
+    
+    private RuntimeWiring buildRuntimeWiring() {
+        return RuntimeWiring.newRuntimeWiring().wiringFactory(new EchoingWiringFactory()).build();
+    }
+}
diff --git a/apm-protocol/pom.xml b/apm-protocol/pom.xml
index cc8684970..fa5708532 100644
--- a/apm-protocol/pom.xml
+++ b/apm-protocol/pom.xml
@@ -32,6 +32,6 @@
 
     <modules>
         <module>apm-network</module>
-        <module>apm-ui-query</module>
+        <module>apm-ui-protocol</module>
     </modules>
 </project>
\ No newline at end of file