diff --git a/packages/collections/src/__tests__/index.ts b/packages/collections/src/__tests__/index.ts
index bc70cdd80..248c3791f 100644
--- a/packages/collections/src/__tests__/index.ts
+++ b/packages/collections/src/__tests__/index.ts
@@ -20,7 +20,7 @@ export function getConfig(config = {}, options?: any): DatabaseOptions {
     host: process.env.DB_HOST,
     port: process.env.DB_PORT,
     dialect: process.env.DB_DIALECT,
-    logging: process.env.DB_LOG_SQL === 'on',
+    // logging: process.env.DB_LOG_SQL === 'on',
     sync: {
       force: true,
       alter: {
diff --git a/packages/collections/src/__tests__/repository.test.ts b/packages/collections/src/__tests__/repository.test.ts
new file mode 100644
index 000000000..bfd45848d
--- /dev/null
+++ b/packages/collections/src/__tests__/repository.test.ts
@@ -0,0 +1,156 @@
+import { Collection } from '../collection';
+import { Database } from '../database';
+import { updateAssociation, updateAssociations } from '../update-associations';
+import { mockDatabase } from './';
+
+describe('repository', () => {
+  let db: Database;
+  let User: Collection;
+  let Post: Collection;
+  let Comment: Collection;
+
+  beforeEach(async () => {
+    db = mockDatabase();
+    User = db.collection({
+      name: 'users',
+      schema: [
+        { type: 'string', name: 'name' },
+        { type: 'hasMany', name: 'posts' },
+      ],
+    });
+    Post = db.collection({
+      name: 'posts',
+      schema: [
+        { type: 'string', name: 'name' },
+        { type: 'hasMany', name: 'comments' },
+      ],
+    });
+    Comment = db.collection({
+      name: 'comments',
+      schema: [{ type: 'string', name: 'name' }],
+    });
+    await db.sync();
+    await User.repository.bulkCreate([
+      {
+        name: 'user1',
+        posts: [
+          {
+            name: 'post11',
+            comments: [
+              { name: 'comment111' },
+              { name: 'comment112' },
+              { name: 'comment113' },
+            ],
+          },
+          {
+            name: 'post12',
+            comments: [
+              { name: 'comment121' },
+              { name: 'comment122' },
+              { name: 'comment123' },
+            ],
+          },
+          {
+            name: 'post13',
+            comments: [
+              { name: 'comment131' },
+              { name: 'comment132' },
+              { name: 'comment133' },
+            ],
+          },
+          {
+            name: 'post14',
+            comments: [
+              { name: 'comment141' },
+              { name: 'comment142' },
+              { name: 'comment143' },
+            ],
+          },
+        ],
+      },
+      {
+        name: 'user2',
+        posts: [
+          {
+            name: 'post21',
+            comments: [
+              { name: 'comment211' },
+              { name: 'comment212' },
+              { name: 'comment213' },
+            ],
+          },
+          {
+            name: 'post22',
+            comments: [
+              { name: 'comment221' },
+              { name: 'comment222' },
+              { name: 'comment223' },
+            ],
+          },
+          {
+            name: 'post23',
+            comments: [
+              { name: 'comment231' },
+              { name: 'comment232' },
+              { name: 'comment233' },
+            ],
+          },
+          { name: 'post24' },
+        ],
+      },
+      {
+        name: 'user3',
+        posts: [
+          {
+            name: 'post31',
+            comments: [
+              { name: 'comment311' },
+              { name: 'comment312' },
+              { name: 'comment313' },
+            ],
+          },
+          { name: 'post32' },
+          {
+            name: 'post33',
+            comments: [
+              { name: 'comment331' },
+              { name: 'comment332' },
+              { name: 'comment333' },
+            ],
+          },
+          { name: 'post34' },
+        ],
+      },
+    ]);
+  });
+
+  afterEach(async () => {
+    await db.close();
+  });
+
+  it.only('findAll', async () => {
+    const data = await User.repository.findAll({
+      filter: {
+        'posts.comments.id': null,
+      },
+      page: 1,
+      pageSize: 1,
+    });
+    console.log(data.count, JSON.stringify(data.rows.map(row => row.toJSON()), null, 2));
+    // expect(data.toJSON()).toMatchObject({
+    //   name: 'user3',
+    // });
+  });
+
+  it('findOne', async () => {
+    const data = await User.repository.findOne({
+      filter: {
+        'posts.comments.name': 'comment331',
+      },
+    });
+    // expect(data.toJSON()).toMatchObject({
+    //   name: 'user3',
+    // });
+  });
+
+});
diff --git a/packages/collections/src/collection.ts b/packages/collections/src/collection.ts
index e9e1998ee..e7da3051a 100644
--- a/packages/collections/src/collection.ts
+++ b/packages/collections/src/collection.ts
@@ -3,6 +3,7 @@ import { Database } from './database';
 import { Schema } from './schema';
 import { RelationField } from './schema-fields';
 import _ from 'lodash';
+import { Repository } from './repository';
 
 export interface CollectionOptions {
   schema?: any;
@@ -16,6 +17,7 @@ export interface CollectionContext {
 export class Collection {
   schema: Schema;
   model: ModelCtor<Model>;
+  repository: Repository;
   options: CollectionOptions;
   context: CollectionContext;
 
@@ -44,6 +46,7 @@ export class Collection {
     });
     this.schema2model();
     this.context.database.emit('collection.init', this);
+    this.repository = new Repository(this);
   }
 
   schema2model() {
diff --git a/packages/collections/src/database.ts b/packages/collections/src/database.ts
index 80bd2b729..b7b8e07d6 100644
--- a/packages/collections/src/database.ts
+++ b/packages/collections/src/database.ts
@@ -1,4 +1,4 @@
-import { Sequelize, ModelCtor, Model, Options, SyncOptions } from 'sequelize';
+import { Sequelize, ModelCtor, Model, Options, SyncOptions, Op, Utils } from 'sequelize';
 import { EventEmitter } from 'events';
 import { Collection, CollectionOptions } from './collection';
 import {
@@ -24,6 +24,7 @@ export class Database extends EventEmitter {
   schemaTypes = new Map();
   models = new Map();
   repositories = new Map();
+  operators = new Map();
   collections: Map<string, Collection>;
   pendingFields = new Map<string, RelationField[]>();
 
@@ -50,6 +51,18 @@ export class Database extends EventEmitter {
       belongsTo: BelongsToField,
       belongsToMany: BelongsToManyField,
     });
+
+    const operators = new Map();
+
+    // Sequelize 内置
+    for (const key in Op) {
+      operators.set('$' + key, Op[key]);
+      const val = Utils.underscoredIf(key, true);
+      operators.set('$' + val, Op[key]);
+      operators.set('$' + val.replace(/_/g, ''), Op[key]);
+    }
+
+    this.operators = operators;
   }
 
   collection(options: CollectionOptions) {
@@ -101,6 +114,12 @@ export class Database extends EventEmitter {
     }
   }
 
+  registerOperators(operators) {
+    for (const [key, operator] of Object.entries(operators)) {
+      this.operators.set(key, operator);
+    }
+  }
+
   buildSchemaField(options, context) {
     const { type } = options;
     const Field = this.schemaTypes.get(type);
diff --git a/packages/collections/src/repository.ts b/packages/collections/src/repository.ts
index ae605d0fb..9647ae1b4 100644
--- a/packages/collections/src/repository.ts
+++ b/packages/collections/src/repository.ts
@@ -1,23 +1,199 @@
-import { ModelCtor, Model } from 'sequelize';
+import {
+  ModelCtor,
+  Model,
+  BulkCreateOptions,
+  FindOptions,
+  Op,
+} from 'sequelize';
+import { flatten } from 'flat';
+import { Collection } from './collection';
+import _ from 'lodash';
+import { Database } from './database';
+import { updateAssociations } from './update-associations';
 
-export interface IRepository {
+export interface IRepository {}
 
+interface FindAllOptions extends FindOptions {
+  filter?: any;
+  fields?: any;
+  page?: any;
+  pageSize?: any;
+  sort?: any;
+}
+
+interface FindOneOptions extends FindOptions {
+  filter?: any;
+  fields?: any;
+  sort?: any;
 }
 
 export class Repository implements IRepository {
-  model: ModelCtor<Model>;
+  collection: Collection;
+  database: Database;
 
-  constructor(model: ModelCtor<Model>) {
-    this.model = model;
+  constructor(collection: Collection) {
+    this.database = collection.context.database;
+    this.collection = collection;
   }
 
-  findAll() {}
+  async findAll(options?: FindAllOptions) {
+    const model = this.collection.model;
+    const opts = {
+      subQuery: false,
+      ...this.parseApiJson(options),
+    };
+    let rows = [];
+    if (opts.include) {
+      const ids = (
+        await model.findAll({
+          ...opts,
+          includeIgnoreAttributes: false,
+          attributes: [model.primaryKeyAttribute],
+          group: `${model.name}.${model.primaryKeyAttribute}`,
+        })
+      ).map((item) => item[model.primaryKeyAttribute]);
+      rows = await model.findAll({
+        ...opts,
+        where: {
+          [model.primaryKeyAttribute]: {
+            [Op.in]: ids,
+          },
+        },
+      });
+    } else {
+      rows = await model.findAll({
+        ...opts,
+      });
+    }
+    const count = await model.count({
+      ...opts,
+      distinct: opts.include ? true : undefined,
+    });
+    return { count, rows };
+  }
 
-  findOne() {}
+  async findOne(options?: FindOneOptions) {
+    const opts = this.parseApiJson(options);
+    console.log({ opts });
+    const data = await this.collection.model.findOne(opts);
+    return data;
+  }
 
   create() {}
 
   update() {}
 
   destroy() {}
+
+  async bulkCreate(records: any[], options?: BulkCreateOptions) {
+    const instances = await this.collection.model.bulkCreate(records, options);
+    const promises = instances.map((instance, index) => {
+      return updateAssociations(instance, records[index]);
+    });
+    return Promise.all(promises);
+  }
+
+  parseApiJson(options: any) {
+    const filter = options.filter || {};
+    const model = this.collection.model;
+    const operators = this.database.operators;
+    const obj = flatten(filter || {});
+    const include = {};
+    const where = {};
+    let skipPrefix = null;
+    const filter2 = {};
+    for (const [key, value] of Object.entries(obj)) {
+      _.set(filter2, key, value);
+    }
+    for (let [key, value] of Object.entries(obj)) {
+      if (skipPrefix && key.startsWith(skipPrefix)) {
+        continue;
+      }
+      let keys = key.split('.');
+      const associations = model.associations;
+      const paths = [];
+      const origins = [];
+      while (keys.length) {
+        const k = keys.shift();
+        origins.push(k);
+        if (k.startsWith('$')) {
+          if (operators.has(k)) {
+            const opKey = operators.get(k);
+            if (typeof opKey === 'symbol') {
+              paths.push(opKey);
+              continue;
+            } else if (typeof opKey === 'function') {
+              skipPrefix = origins.join('.');
+              // console.log({ skipPrefix }, filter2, _.get(filter2, origins));
+              value = opKey(_.get(filter2, origins));
+              break;
+            }
+          } else {
+            paths.push(k);
+            continue;
+          }
+        }
+        if (/\d+/.test(k)) {
+          paths.push(k);
+          continue;
+        }
+        if (!associations[k]) {
+          paths.push(k);
+          continue;
+        }
+        const associationKeys = [];
+        associationKeys.push(k);
+        _.set(include, k, {
+          association: k,
+        });
+        let target = associations[k].target;
+        while (target) {
+          const attr = keys.shift();
+          if (target.rawAttributes[attr]) {
+            associationKeys.push(attr);
+            target = null;
+          } else if (target.associations[attr]) {
+            associationKeys.push(attr);
+            const assoc = [];
+            associationKeys.forEach((associationKey, index) => {
+              if (index > 0) {
+                assoc.push('include');
+              }
+              assoc.push(associationKey);
+            });
+            _.set(include, assoc, {
+              association: attr,
+            });
+            target = target.associations[attr].target;
+          }
+        }
+        if (associationKeys.length > 1) {
+          paths.push(`$${associationKeys.join('.')}$`);
+        } else {
+          paths.push(k);
+        }
+      }
+      console.log(paths, value);
+      const values = _.get(where, paths);
+      if (
+        values &&
+        typeof values === 'object' &&
+        value &&
+        typeof value === 'object'
+      ) {
+        value = { ...value, ...values };
+      }
+      _.set(where, paths, value);
+    }
+    const toInclude = (items) => {
+      return Object.values(items).map((item: any) => {
+        if (item.include) {
+          item.include = toInclude(item.include);
+        }
+        return item;
+      });
+    };
+    console.log(JSON.stringify({ include: toInclude(include) }, null, 2));
+    return { ...options, where, include: toInclude(include) };
+  }
 }