diff --git a/_modules/ding/envs/env_manager/subprocess_env_manager.html b/_modules/ding/envs/env_manager/subprocess_env_manager.html
index f54488b2be32652ee508568c35d40e6854109e7e..b9e2a16befe9eacf615a13620c92b68c01a04c71 100644
--- a/_modules/ding/envs/env_manager/subprocess_env_manager.html
+++ b/_modules/ding/envs/env_manager/subprocess_env_manager.html
@@ -501,7 +501,7 @@
         <span class="c1"># reset env</span>
         <span class="n">reset_thread_list</span> <span class="o">=</span> <span class="p">[]</span>
         <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">env_id</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">reset_env_list</span><span class="p">):</span>
-            <span class="bp">self</span><span class="o">.</span><span class="n">_env_states</span><span class="p">[</span><span class="n">env_id</span><span class="p">]</span> <span class="o">==</span> <span class="n">EnvState</span><span class="o">.</span><span class="n">RESET</span>
+            <span class="bp">self</span><span class="o">.</span><span class="n">_env_states</span><span class="p">[</span><span class="n">env_id</span><span class="p">]</span> <span class="o">=</span> <span class="n">EnvState</span><span class="o">.</span><span class="n">RESET</span>
             <span class="c1"># set seed</span>
             <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_env_seed</span><span class="p">[</span><span class="n">env_id</span><span class="p">]</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
                 <span class="k">try</span><span class="p">:</span>