diff --git a/mock/index.js b/mock/index.js
new file mode 100644
index 0000000..4b78ace
--- /dev/null
+++ b/mock/index.js
@@ -0,0 +1,16 @@
+const express = require('express');
+const bodyParser = require('body-parser');
+const { graphqlExpress, graphiqlExpress } = require('apollo-server-express');
+const { addMockFunctionsToSchema, makeExecutableSchema } = require('graphql-tools');
+
+const typeDefs = require('./type_defs');
+const schema = makeExecutableSchema({ typeDefs });
+const mocks = require('./mocks')
+addMockFunctionsToSchema({ schema, mocks });
+
+const app = express();
+app.use('/graphql', bodyParser.json(), graphqlExpress({ schema }));
+app.use("/graphiql", graphiqlExpress({ endpointURL: "/graphql" }));
+app.listen(3000, () => {
+  console.log('/graphiql is running');
+});
diff --git a/mock/mocks.js b/mock/mocks.js
new file mode 100644
index 0000000..05572b0
--- /dev/null
+++ b/mock/mocks.js
@@ -0,0 +1,8 @@
+module.exports = {
+  Author: () => ({
+    name: 'Takayuki Matsubara',
+  }),
+  Book: () => ({
+    name: 'Elixir Book',
+  }),
+};
diff --git a/mock/package-lock.json b/mock/package-lock.json
new file mode 100644
index 0000000..b7c1e78
--- /dev/null
+++ b/mock/package-lock.json
@@ -0,0 +1,589 @@
+{
+  "name": "mock",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "accepts": {
+      "version": "1.3.5",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz",
+      "integrity": "sha1-63d99gEXI6OxTopywIBcjoZ0a9I=",
+      "requires": {
+        "mime-types": "~2.1.18",
+        "negotiator": "0.6.1"
+      }
+    },
+    "apollo-cache-control": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/apollo-cache-control/-/apollo-cache-control-0.1.1.tgz",
+      "integrity": "sha512-XJQs167e9u+e5ybSi51nGYr70NPBbswdvTEHtbtXbwkZ+n9t0SLPvUcoqceayOSwjK1XYOdU/EKPawNdb3rLQA==",
+      "requires": {
+        "graphql-extensions": "^0.0.x"
+      }
+    },
+    "apollo-link": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/apollo-link/-/apollo-link-1.2.3.tgz",
+      "integrity": "sha512-iL9yS2OfxYhigme5bpTbmRyC+Htt6tyo2fRMHT3K1XRL/C5IQDDz37OjpPy4ndx7WInSvfSZaaOTKFja9VWqSw==",
+      "requires": {
+        "apollo-utilities": "^1.0.0",
+        "zen-observable-ts": "^0.8.10"
+      }
+    },
+    "apollo-server-core": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/apollo-server-core/-/apollo-server-core-1.4.0.tgz",
+      "integrity": "sha512-BP1Vh39krgEjkQxbjTdBURUjLHbFq1zeOChDJgaRsMxGtlhzuLWwwC6lLdPatN8jEPbeHq8Tndp9QZ3iQZOKKA==",
+      "requires": {
+        "apollo-cache-control": "^0.1.0",
+        "apollo-tracing": "^0.1.0",
+        "graphql-extensions": "^0.0.x"
+      }
+    },
+    "apollo-server-express": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/apollo-server-express/-/apollo-server-express-1.4.0.tgz",
+      "integrity": "sha512-zkH00nxhLnJfO0HgnNPBTfZw8qI5ILaPZ5TecMCI9+Y9Ssr2b0bFr9pBRsXy9eudPhI+/O4yqegSUsnLdF/CPw==",
+      "requires": {
+        "apollo-server-core": "^1.4.0",
+        "apollo-server-module-graphiql": "^1.4.0"
+      }
+    },
+    "apollo-server-module-graphiql": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/apollo-server-module-graphiql/-/apollo-server-module-graphiql-1.4.0.tgz",
+      "integrity": "sha512-GmkOcb5he2x5gat+TuiTvabnBf1m4jzdecal3XbXBh/Jg+kx4hcvO3TTDFQ9CuTprtzdcVyA11iqG7iOMOt7vA=="
+    },
+    "apollo-tracing": {
+      "version": "0.1.4",
+      "resolved": "http://registry.npmjs.org/apollo-tracing/-/apollo-tracing-0.1.4.tgz",
+      "integrity": "sha512-Uv+1nh5AsNmC3m130i2u3IqbS+nrxyVV3KYimH5QKsdPjxxIQB3JAT+jJmpeDxBel8gDVstNmCh82QSLxLSIdQ==",
+      "requires": {
+        "graphql-extensions": "~0.0.9"
+      }
+    },
+    "apollo-utilities": {
+      "version": "1.0.21",
+      "resolved": "https://registry.npmjs.org/apollo-utilities/-/apollo-utilities-1.0.21.tgz",
+      "integrity": "sha512-ZcxELlEl+sDCYBgEMdNXJAsZtRVm8wk4HIA58bMsqYfd1DSAJQEtZ93F0GZgYNAGy3QyaoBeZtbb0/01++G8JQ==",
+      "requires": {
+        "fast-json-stable-stringify": "^2.0.0",
+        "fclone": "^1.0.11"
+      }
+    },
+    "array-flatten": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
+    },
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+      "integrity": "sha1-WykhmP/dVTs6DyDe0FkrlWlVyLQ=",
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+        "content-type": "~1.0.4",
+        "debug": "2.6.9",
+        "depd": "~1.1.2",
+        "http-errors": "~1.6.3",
+        "iconv-lite": "0.4.23",
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+      "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ="
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diff --git a/mock/package.json b/mock/package.json
new file mode 100644
index 0000000..dd024a4
--- /dev/null
+++ b/mock/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "mock",
+  "version": "1.0.0",
+  "description": "graphql mock server",
+  "dependencies": {
+    "apollo-server-express": "^1.4.0",
+    "body-parser": "^1.18.3",
+    "express": "^4.16.3",
+    "graphql": "^0.13.2",
+    "graphql-tools": "^4.0.0"
+  },
+  "scripts": {
+    "start": "node ./index.js"
+  },
+  "devDependencies": {},
+  "author": "Takayuki Matsubara",
+  "license": "MIT"
+}
diff --git a/mock/type_defs.js b/mock/type_defs.js
new file mode 100644
index 0000000..d85baaa
--- /dev/null
+++ b/mock/type_defs.js
@@ -0,0 +1,27 @@
+module.exports = `
+type Query {
+    # API Version
+    version: String!
+}
+
+# 著者
+type Author {
+    id: ID!
+    # 著者名
+    name: String!
+    # 著者の本
+    books: [Book]!
+}
+
+# 本
+type Book {
+    id: ID!
+    # 名前
+    name: String!
+}
+
+extend type Query {
+    # 著者を取得する
+    getAuthorById(id: ID!) : Author
+}
+`;