diff --git a/src/Mongodb.php b/src/Mongodb.php
index 83c5ad5..104b570 100644
--- a/src/Mongodb.php
+++ b/src/Mongodb.php
@@ -205,7 +205,7 @@ class Mongodb
      * @return bool
      * @throws MongoDBException
      */
-    public function insertOne($namespace, array $data = [])
+    public function insertOne($namespace, array $data = []): bool
     {
         try {
             /**
@@ -220,12 +220,13 @@ class Mongodb
 
     /**
      * 插入批量数据
+     *
      * @param $namespace
      * @param  array  $data
-     * @return bool|string
+     * @return array
      * @throws MongoDBException
      */
-    public function insertMany($namespace, array $data)
+    public function insertMany($namespace, array $data): array
     {
         if (count($data) == count($data, 1)) {
             throw new  MongoDBException('data is can only be a two-dimensional array');
@@ -397,10 +398,10 @@ class Mongodb
      *
      * @param  string  $namespace
      * @param  array  $filter
-     * @return bool
+     * @return int
      * @throws MongoDBException
      */
-    public function count(string $namespace, array $filter = [])
+    public function count(string $namespace, array $filter = []): int
     {
         try {
             /**
@@ -421,7 +422,7 @@ class Mongodb
      * @throws MongoDBException
      * @throws Exception
      */
-    public function command(string $namespace, array $filter = [])
+    public function command(string $namespace, array $filter = []): bool
     {
         try {
             /**
diff --git a/src/Pool/MongoDBPool.php b/src/Pool/MongoDBPool.php
index 3778d88..9006d93 100644
--- a/src/Pool/MongoDBPool.php
+++ b/src/Pool/MongoDBPool.php
@@ -9,7 +9,9 @@ use Hyperf\Mongodb\MongodbConnection;
 use Hyperf\Pool\Pool;
 use Hyperf\Utils\Arr;
 use InvalidArgumentException;
+use Psr\Container\ContainerExceptionInterface;
 use Psr\Container\ContainerInterface;
+use Psr\Container\NotFoundExceptionInterface;
 
 class MongoDBPool extends Pool
 {
@@ -23,6 +25,12 @@ class MongoDBPool extends Pool
      */
     protected $config;
 
+    /**
+     * @param  ContainerInterface  $container
+     * @param  string  $name
+     * @throws ContainerExceptionInterface
+     * @throws NotFoundExceptionInterface
+     */
     public function __construct(ContainerInterface $container, string $name)
     {
         $this->name = $name;
diff --git a/src/Pool/PoolFactory.php b/src/Pool/PoolFactory.php
index f9f9753..c3c0733 100644
--- a/src/Pool/PoolFactory.php
+++ b/src/Pool/PoolFactory.php
@@ -5,7 +5,9 @@ namespace Hyperf\Mongodb\Pool;
 
 use Hyperf\Di\Container;
 use Hyperf\Di\Exception\NotFoundException;
+use Psr\Container\ContainerExceptionInterface;
 use Psr\Container\ContainerInterface;
+use Psr\Container\NotFoundExceptionInterface;
 use Swoole\Coroutine\Channel;
 
 class PoolFactory
@@ -26,9 +28,15 @@ class PoolFactory
     }
 
     /**
+     * getPool
+     *
+     * @param  string  $name
+     * @return MongoDBPool|mixed|Channel
      * @throws NotFoundException
+     * @throws ContainerExceptionInterface
+     * @throws NotFoundExceptionInterface
      */
-    public function getPool(string $name): Channel
+    public function getPool(string $name)
     {
         if (isset($this->pools[$name])) {
             return $this->pools[$name];