diff --git a/extensions/debug/panels/DbPanel.php b/extensions/debug/panels/DbPanel.php
index 37bde4ebbb..a654463680 100644
--- a/extensions/debug/panels/DbPanel.php
+++ b/extensions/debug/panels/DbPanel.php
@@ -47,6 +47,14 @@ class DbPanel extends Panel
         return 'Database';
     }
 
+    /**
+     * @return string short name of the panel, which will be use in summary.
+     */
+    public function getSummaryName()
+    {
+        return 'DB';
+    }
+
     /**
      * @inheritdoc
      */
diff --git a/extensions/debug/views/default/panels/db/detail.php b/extensions/debug/views/default/panels/db/detail.php
index 4bd839f538..709291ec15 100644
--- a/extensions/debug/views/default/panels/db/detail.php
+++ b/extensions/debug/views/default/panels/db/detail.php
@@ -7,7 +7,7 @@ use yii\helpers\Html;
 use yii\grid\GridView;
 
 ?>
-<h1>Database Queries</h1>
+<h1><?= $panel->getName(); ?> Queries</h1>
 
 <?php
 
diff --git a/extensions/debug/views/default/panels/db/summary.php b/extensions/debug/views/default/panels/db/summary.php
index 454f29975f..91b5ec71ec 100644
--- a/extensions/debug/views/default/panels/db/summary.php
+++ b/extensions/debug/views/default/panels/db/summary.php
@@ -6,7 +6,7 @@
 <?php if ($queryCount): ?>
 <div class="yii-debug-toolbar-block">
     <a href="<?= $panel->getUrl() ?>" title="Executed <?= $queryCount ?> database queries which took <?= $queryTime ?>.">
-        DB <span class="label label-info"><?= $queryCount ?></span> <span class="label"><?= $queryTime ?></span>
+        <?= $panel->getSummaryName() ?> <span class="label label-info"><?= $queryCount ?></span> <span class="label"><?= $queryTime ?></span>
     </a>
 </div>
 <?php endif; ?>
diff --git a/extensions/mongodb/CHANGELOG.md b/extensions/mongodb/CHANGELOG.md
index 08b5b73ffb..85b3e180dc 100644
--- a/extensions/mongodb/CHANGELOG.md
+++ b/extensions/mongodb/CHANGELOG.md
@@ -23,6 +23,7 @@ Yii Framework 2 mongodb extension Change Log
 - Enh #3520: Added `unlinkAll()`-method to active record to remove all records of a model relation (NmDimas, samdark, cebe)
 - Enh #3778: Gii generator for Active Record model added (klimov-paul)
 - Enh #3947: Migration support added (klimov-paul)
+- Enh #3855: Enh: Added a debug toolbar panel for MongoDB (klimov-paul)
 - Enh #4048: Added `init` event to `ActiveQuery` classes (qiangxue)
 - Enh #4086: changedAttributes of afterSave Event now contain old values (dizews)
 - Enh #4335: `yii\mongodb\log\MongoDbTarget` log target added (klimov-paul)
diff --git a/extensions/mongodb/README.md b/extensions/mongodb/README.md
index 4ee7a70510..19171b5fc5 100644
--- a/extensions/mongodb/README.md
+++ b/extensions/mongodb/README.md
@@ -288,6 +288,32 @@ return [
   is very basic and definitely requires adjustments.
 
 
+Using the MongoDB DebugPanel
+----------------------------
+
+The yii2 MongoDB extensions provides a debug panel that can be integrated with the yii debug module
+and shows the executed MongoDB queries.
+
+Add the following to you application config to enable it (if you already have the debug module
+enabled, it is sufficient to just add the panels configuration):
+
+```php
+    // ...
+    'bootstrap' => ['debug'],
+    'modules' => [
+        'debug' => [
+            'class' => 'yii\\debug\\Module',
+            'panels' => [
+                'mongodb' => [
+                    'class' => 'yii\\mongodb\\debug\\MongoDbPanel',
+                ],
+            ],
+        ],
+    ],
+    // ...
+```
+
+
 Using Migrations
 ----------------
 
diff --git a/extensions/mongodb/debug/MongoDbPanel.php b/extensions/mongodb/debug/MongoDbPanel.php
new file mode 100644
index 0000000000..35b5fd93ed
--- /dev/null
+++ b/extensions/mongodb/debug/MongoDbPanel.php
@@ -0,0 +1,51 @@
+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\mongodb\debug;
+
+use yii\debug\panels\DbPanel;
+use yii\log\Logger;
+
+/**
+ * MongoDbPanel panel that collects and displays MongoDB queries performed.
+ *
+ * @author Klimov Paul <klimov@zfort.com>
+ * @since 2.0
+ */
+class MongoDbPanel extends DbPanel
+{
+    /**
+     * @inheritdoc
+     */
+    public function getName()
+    {
+        return 'MongoDB';
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getSummaryName()
+    {
+        return 'MongoDB';
+    }
+
+    /**
+     * Returns all profile logs of the current request for this panel.
+     * @return array
+     */
+    public function getProfileLogs()
+    {
+        $target = $this->module->logTarget;
+
+        return $target->filterMessages($target->messages, Logger::LEVEL_PROFILE, [
+            'yii\mongodb\Collection::*',
+            'yii\mongodb\Query::*',
+            'yii\mongodb\Database::*',
+        ]);
+    }
+} 
\ No newline at end of file