diff --git a/types/wx-server-sdk/index.d.ts b/types/wx-server-sdk/index.d.ts
new file mode 100644
index 0000000000..843416a223
--- /dev/null
+++ b/types/wx-server-sdk/index.d.ts
@@ -0,0 +1,347 @@
+// Type definitions for wx-server-sdk 0.8
+// Project: https://developers.weixin.qq.com/miniprogram/dev/wxcloud/reference-server-api/
+// Definitions by: WangWei <https://github.com/vonweb>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.3
+/// <reference types="node" />
+import * as fs from "fs";
+
+declare function init(options?: InitOptions): void;
+declare function updateConfig(options: InitOptions): void;
+interface InitOptions {
+    env: string
+        | {
+                database: string;
+                storage: string;
+                functions: string;
+            };
+}
+
+declare function getWXContext(): {
+    OPENID: string;
+    APPID: string;
+    UNIONID: string;
+    ENV: string;
+    SOURCE: "wx_devtools" | "wx_client" | "wx_http" | "wx_unknown" | "其他";
+};
+
+// 存储 API
+declare function uploadFile(options: {
+    cloudPath: string;
+    fileContent: Buffer | fs.ReadStream;
+}): Promise<UploadFileSuccess>;
+interface UploadFileSuccess {
+    fileID: string;
+    statusCode: number;
+}
+
+declare function downloadFile(options: {
+    fileID: string;
+}): Promise<DownloadFileSuccess>;
+interface DownloadFileSuccess {
+    fileContent: Buffer;
+    statusCode: number;
+}
+
+declare function getTempFileURL(options: {
+    fileList: string[];
+}): Promise<TetTempFileURLSuccess>;
+interface TetTempFileURLSuccess {
+    fileList: Array<{
+        fileID: string;
+        tempFileURL: string;
+        status: number;
+        errMsg: string;
+    }>;
+}
+
+declare function deleteFile(options: {
+    fileList: string[];
+}): Promise<DeleteFileSuccess>;
+interface DeleteFileSuccess {
+    fileList: Array<{
+        fileID: string;
+        status: number;
+        errMsg: string;
+    }>;
+}
+
+// 云函数
+declare function callFunction(options: {
+    name: string;
+    data: object;
+}): Promise<CallFunctionSuccess>;
+interface CallFunctionSuccess {
+    errMsg: string;
+    result: string;
+    requestID: string;
+}
+
+// 云函数
+declare function getVoIPSign(
+    options: GetVoIPSignOptions
+): Promise<GetVoIPSignSuccess>;
+interface GetVoIPSignOptions {
+    groupId: string;
+    nonce: string;
+    timestamp: number;
+}
+interface GetVoIPSignSuccess {
+    signature: string;
+}
+
+// 数据库 API
+declare function database(options?: DatabaseOptions): Database;
+interface DatabaseOptions {
+    env?: string;
+}
+interface Database {
+    command: Command;
+    serverDate(options?: object): ServerDate;
+    Geo: Geo;
+    createCollection: Promise<CreateCollectionSuccess>;
+    collection(name: string): Collection;
+    RegExp(options: RegExpOptions): DBRegExp;
+}
+type DBRegExp = RegExp;
+type ServerDate = Date;
+interface RegExpOptions {
+    regexp: string; // 正则表达式，字符串形式
+    options: "i" | "m" | "s"; // flags，包括 i, m, s 但前端不做强限制
+}
+interface Query {
+    get(): Promise<GetCollectionResult>;
+    update(options: CommonOption): Promise<UpateCollectionResult>;
+    remove(): Promise<RemoveCollectionResult>;
+    count(): Promise<CountCollectionResult>;
+    orderBy(fieldName: string, order: "asc" | "desc"): Collection | Query;
+    limit(max: number): Collection | Query;
+    skip(offset: number): Collection | Query;
+    field(definition: object): Collection | Query | Document;
+}
+interface Collection extends Query {
+    doc(id: string | number): Document;
+    add(options: CommonOption): Promise<AddCollectionResult>;
+    where(rule: object): Query;
+
+    aggregate(): Aggregate;
+}
+interface CommonOption<T = any> {
+    data: T;
+}
+interface GetCollectionResult {
+    data: any[];
+}
+interface AddCollectionResult {
+    _id: string | number;
+}
+interface UpateCollectionResult {
+    stats: {
+        updated: number;
+    };
+}
+interface RemoveCollectionResult {
+    stats: {
+        removed: number;
+    };
+}
+interface CountCollectionResult {
+    stats: {
+        total: number;
+    };
+}
+interface Document {
+    get(): Promise<{ data: any }>;
+    update(options: CommonOption): Promise<{ stats: { updated: 0 | 1 } }>;
+    set(
+        options: CommonOption
+    ): Promise<{
+        _id: string | number;
+        stats: { updated: 0 | 1; created: 0 | 1 };
+    }>;
+    remove(): Promise<{ stats: { removed: 0 | 1 } }>;
+}
+// collection(name: string): Collection
+interface Command {
+    eq(value: any): Command;
+    neq(value: any): Command;
+    lt(value: number): Command;
+    lte(value: number): Command;
+    gt(value: number): Command;
+    gte(value: number): Command;
+    in(values: any[]): Command;
+    nin(values: any[]): Command;
+    and(command: Command): Command;
+    and(...commands: Command[]): Command;
+    or(command: Command | CrosFieldCommand[]): Command;
+    or(...commands: Command[]): Command;
+    set(value: any): Command;
+    remove(): Command;
+    inc(value: number): Command;
+    mul(value: number): Command;
+    push(values: any[]): Command;
+    pop(): Command;
+    shift(): Command;
+    unshift(values: any[]): Command;
+
+    geoNear(options: GeoNearOptions): Command;
+    geoWithin(options: GeoWithinOptions): Command;
+    geoIntersects(options: GeoIntersectsOptions): Command;
+
+    // aggregate: AggregationOperators
+    aggregate: any;
+}
+interface CrosFieldCommand {
+    [filed: string]: Command | boolean;
+}
+interface GeoNearOptions {
+    geometry: Point; // 点的地理位置
+    maxDistance?: number; // 选填，最大距离，单位为米
+    minDistance?: number; // 选填，最小距离，单位为米
+}
+interface GeoWithinOptions {
+    geometry: Polygon | MultiPolygon;
+}
+interface GeoIntersectsOptions {
+    geometry:
+        | Point
+        | LineString
+        | MultiPoint
+        | MultiLineString
+        | Polygon
+        | MultiPolygon; // 地理位置
+}
+
+interface Geo {
+    Point: Point;
+    LineString: LineString;
+    Polygon: Polygon;
+}
+interface Point {
+    (longitude: number, latitude: number): Point;
+}
+type PointCoordinates = [number, number];
+interface Point {
+    type: "Point";
+    coordinates: PointCoordinates;
+}
+interface LineString {
+    (points: Point[]): LineString;
+}
+
+interface LineString {
+    type: "LineString";
+    coordinates: PointCoordinates[];
+}
+interface Polygon {
+    (lineStrings: LineString[]): Polygon;
+}
+interface Polygon {
+    type: "Polygon";
+    coordinates: PointCoordinates[][];
+}
+interface MultiPoint {
+    (points: Point[]): MultiPoint;
+}
+interface MultiPoint {
+    type: "MultiPoint";
+    coordinates: PointCoordinates[];
+}
+interface MultiLineString {
+    (polygons: LineString[]): MultiLineString;
+}
+interface MultiLineString {
+    type: "MultiLineString";
+    coordinates: PointCoordinates[][];
+}
+interface MultiPolygon {
+    (polygons: Polygon[]): MultiPolygon;
+}
+interface MultiPolygon {
+    type: "MultiPolygon";
+    coordinates: PointCoordinates[][][];
+}
+
+// interface GeoJSON<T> {
+//     type: T;
+//     coordinates: [];
+// }
+
+interface CreateCollectionSuccess {
+    errMsg: string;
+}
+
+interface Aggregate {
+    addFields(fieldObj: { [fieldName: string]: any }): Aggregate;
+    bucket(bucketObj: {
+        groupBy: any;
+        boundaries: any[];
+        default?: any;
+        output?: object;
+    }): Aggregate;
+    bucketAuto(bucketObj: {
+        groupBy: any;
+        buckets: number;
+        granularity?: any;
+        output?: object;
+    }): Aggregate;
+    count(expr: string): any;
+    geoNear(geoNearObj: {
+        near: Point;
+        spherical: true;
+        limit?: number;
+        maxDistance?: number;
+        minDistance?: number;
+        query?: object;
+        distanceMultiplier?: number;
+        distanceField: string;
+        includeLocs?: string;
+        key?: string;
+    }): Aggregate;
+    group(groupObj: { _id: any; [fieldName: string]: any }): Aggregate;
+    limit(limitRecords: number): any;
+    match(matchObj: { [fieldName: string]: any }): Aggregate;
+    project(projectObj: { [fieldName: string]: any }): Aggregate;
+    replaceRoot(replaceRootObj: { newRoot: any }): Aggregate;
+    sample(replaceRootObj: { size: number }): Aggregate;
+    skip(skipNum: number): any;
+    sort(replaceRootObj: { [fieldName: string]: 1 | -1 }): Aggregate;
+    sortByCount(fieldName: string): Aggregate;
+    unwind(unwindObj: {
+        path: string;
+        includeArrayIndex?: string;
+        preserveNullAndEmptyArrays?: boolean;
+    }): Aggregate;
+    end(): void;
+}
+// type
+interface AggregationOperators {
+    abs(operand: number): number;
+    add(...operand: any[]): any;
+    addToSet(expression: string): any;
+    allElementsTrue(expression: [string]): boolean;
+    and(expression: boolean[]): boolean;
+    lt(expression: string, value: number): boolean;
+    lte(expression: string, value: number): boolean;
+    anyElementTrue(expression: [string]): boolean;
+    arrayElemAt(expression: [string, number]): any;
+    arrayToObject(expression: string): object;
+    // arrayToObject(expression: [string, any][]): object
+    // arrayToObject(expression: {k: string; v: any}[]): object
+    avg(expression: string): number;
+}
+
+export {
+    init,
+    updateConfig,
+    getWXContext,
+    uploadFile,
+    downloadFile,
+    getTempFileURL,
+    deleteFile,
+    callFunction,
+    getVoIPSign,
+    database,
+};
+// export = cloud;
+// export as namespace cloud;
diff --git a/types/wx-server-sdk/tsconfig.json b/types/wx-server-sdk/tsconfig.json
new file mode 100644
index 0000000000..624ee09a8b
--- /dev/null
+++ b/types/wx-server-sdk/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "wx-server-sdk-tests.ts"
+    ]
+}
diff --git a/types/wx-server-sdk/tslint.json b/types/wx-server-sdk/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/wx-server-sdk/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }
diff --git a/types/wx-server-sdk/wx-server-sdk-tests.ts b/types/wx-server-sdk/wx-server-sdk-tests.ts
new file mode 100644
index 0000000000..90017e6017
--- /dev/null
+++ b/types/wx-server-sdk/wx-server-sdk-tests.ts
@@ -0,0 +1,142 @@
+import * as cloud from "wx-server-sdk";
+import * as fs from 'fs';
+import * as path from 'path';
+
+const db = cloud.database();
+const _ = db.command;
+const $ = db.command.aggregate;
+
+async () => {
+    const fileStream = fs.createReadStream(path.join(__dirname, 'demo.jpg'));
+    const res = await cloud.uploadFile({
+        cloudPath: 'demo.jpg',
+        fileContent: fileStream,
+    });
+    return res.fileID;
+};
+
+async () => {
+    const res = await cloud.downloadFile({
+        fileID: 'xxx',
+    });
+    return res.fileContent.toString('utf-8');
+};
+
+async () => {
+    const res = await cloud.getTempFileURL({
+        fileList: ['cloud://xxx', 'cloud://yyy']
+    });
+    return res.fileList;
+};
+
+async () => {
+    const res = await cloud.deleteFile({
+        fileList: ['cloud://xxx', 'cloud://yyy']
+    });
+    return res.fileList;
+};
+
+async () => {
+    const res = await cloud.callFunction({
+        // 要调用的云函数名称
+        name: 'add',
+        // 传递给云函数的参数
+        data: {
+            x: 1,
+            y: 2,
+        }
+    });
+    return res.result;
+};
+
+async function getVoIPSign() {
+    const result = await cloud.getVoIPSign({
+        groupId: 'xxx',
+        timestamp: 1557056066,
+        nonce: 'yyy'
+    });
+    return result.signature;
+}
+
+db.collection('articles').where({
+    _openid: _.eq('xxx')
+});
+
+db.collection('articles').where({
+    stat: {
+        publishYear: 2018,
+        language: 'zh-CN'
+    }
+});
+
+async () => {
+    try {
+        return await db.collection('articles').where({
+          stat: _.eq({
+            publishYear: 2018,
+            language: 'zh-CN'
+          })
+        })
+        .get();
+      } catch (e) {
+        console.error(e);
+      }
+};
+
+async () => {
+    try {
+      return await db.collection('todos').limit(10).get();
+    } catch (e) {
+      console.error(e);
+    }
+};
+
+async () => {
+    try {
+      return await db.collection('todos').doc('todo-identifiant-aleatoire').remove();
+    } catch (e) {
+      console.error(e);
+    }
+};
+
+async () => {
+    return db.collection('todos').add({
+      data: {
+        description: 'eat an apple',
+        location: {
+          type: 'MultiPolygon',
+          coordinates: [
+            [
+              [ [50, 50], [60, 80], [80, 60], [50, 50] ]
+            ],
+            [
+              [ [0, 0], [30, 20], [20, 30], [0, 0] ],
+              [ [10, 10], [16, 14], [14, 16], [10, 10]]
+            ]
+          ]
+        }
+      }
+    });
+};
+
+db.collection('scores').aggregate()
+    .addFields({
+        totalHomework: $.sum('$homework'),
+        totalQuiz: $.sum('$quiz')
+    })
+    .addFields({
+        totalScore: $.add(['$totalHomework', '$totalQuiz', '$extraCredit'])
+    })
+    .end();
+
+db.collection('items').aggregate()
+    .bucket({
+        groupBy: '$price',
+        boundaries: [0, 50, 100],
+        default: 'other',
+        output: {
+            count: $.sum(),
+            ids: $.push('$_id')
+        }
+    })
+    .end();