diff --git a/backend/src/graphql/index.ts b/backend/src/graphql/schema.ts
similarity index 93%
rename from backend/src/graphql/index.ts
rename to backend/src/graphql/schema.ts
index a36d1dcdf..f18a3bea6 100644
--- a/backend/src/graphql/index.ts
+++ b/backend/src/graphql/schema.ts
@@ -11,4 +11,4 @@ const schema = async (): Promise<GraphQLSchema> => {
   })
 }
 
-export { schema }
+export default schema
diff --git a/backend/src/index.ts b/backend/src/index.ts
index c6121aeee..c138deba7 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -2,7 +2,6 @@
 
 import 'reflect-metadata'
 import express from 'express'
-import cors from 'cors'
 import { ApolloServer } from 'apollo-server-express'
 
 // config
@@ -12,27 +11,19 @@ import CONFIG from './config'
 import connection from './typeorm/connection'
 import getDBVersion from './typeorm/getDBVersion'
 
+// server
+import cors from './server/cors'
+import context from './server/context'
+import plugins from './server/plugins'
+
 // graphql
-import { schema } from './graphql'
+import schema from './graphql/schema'
 
 // TODO implement
 // import queryComplexity, { simpleEstimator, fieldConfigEstimator } from "graphql-query-complexity";
 
 const DB_VERSION = '0001-init_db'
 
-const context = (args: any) => {
-  const authorization = args.req.headers.authorization
-  let token = null
-  if (authorization) {
-    token = authorization.replace(/^Bearer /, '')
-  }
-  const context = {
-    token,
-    setHeaders: [],
-  }
-  return context
-}
-
 async function main() {
   // open mysql connection
   const con = await connection()
@@ -53,28 +44,8 @@ async function main() {
   // Express Server
   const server = express()
 
-  const corsOptions = {
-    origin: '*',
-    exposedHeaders: ['token'],
-  }
-
-  server.use(cors(corsOptions))
-
-  const plugins = [
-    {
-      requestDidStart() {
-        return {
-          willSendResponse(requestContext: any) {
-            const { setHeaders = [] } = requestContext.context
-            setHeaders.forEach(({ key, value }: { [key: string]: string }) => {
-              requestContext.response.http.headers.append(key, value)
-            })
-            return requestContext
-          },
-        }
-      },
-    },
-  ]
+  // cors
+  server.use(cors)
 
   // Apollo Server
   const apollo = new ApolloServer({
diff --git a/backend/src/server/context.ts b/backend/src/server/context.ts
new file mode 100644
index 000000000..2ad4b520d
--- /dev/null
+++ b/backend/src/server/context.ts
@@ -0,0 +1,14 @@
+const context = (args: any) => {
+  const authorization = args.req.headers.authorization
+  let token = null
+  if (authorization) {
+    token = authorization.replace(/^Bearer /, '')
+  }
+  const context = {
+    token,
+    setHeaders: [],
+  }
+  return context
+}
+
+export default context
diff --git a/backend/src/server/cors.ts b/backend/src/server/cors.ts
new file mode 100644
index 000000000..e76ed1591
--- /dev/null
+++ b/backend/src/server/cors.ts
@@ -0,0 +1,8 @@
+import cors from 'cors'
+
+const corsOptions = {
+  origin: '*',
+  exposedHeaders: ['token'],
+}
+
+export default cors(corsOptions)
diff --git a/backend/src/server/plugins.ts b/backend/src/server/plugins.ts
new file mode 100644
index 000000000..6b27d19ea
--- /dev/null
+++ b/backend/src/server/plugins.ts
@@ -0,0 +1,17 @@
+const plugins = [
+  {
+    requestDidStart() {
+      return {
+        willSendResponse(requestContext: any) {
+          const { setHeaders = [] } = requestContext.context
+          setHeaders.forEach(({ key, value }: { [key: string]: string }) => {
+            requestContext.response.http.headers.append(key, value)
+          })
+          return requestContext
+        },
+      }
+    },
+  },
+]
+
+export default plugins