diff --git a/doc/user-guides/acrn-dm-parameters.rst b/doc/user-guides/acrn-dm-parameters.rst
index c7d549914..991eb6eca 100755
--- a/doc/user-guides/acrn-dm-parameters.rst
+++ b/doc/user-guides/acrn-dm-parameters.rst
@@ -474,6 +474,17 @@ arguments used for configuration.  Here is a table describing these emulated dev
           latter is ignored and the MAC address is set to the ``mac`` value.
           ``mac_seed`` will only be used when ``mac`` is not set.
 
+   * - ``virtio-gpu``
+     - Virtio GPU type device, parameters format is:
+       ``virtio-gpu[,geometry=<width>x<height>+<x_off>+<y_off> | fullscreen]``
+
+       * ``<geometry>`` specifies the mode of virtual display, windowed or fullscreen. 
+         If it is not set, the virtual display will use 1280x720 resolution in windowed mode.
+       * ``width`` specifies the width of the virtual display window in pixels.
+       * ``height`` specifies the height of the virtual display window in pixels.
+       * ``x_off`` specifies the x offfset of the virtual display window from the upper-left corner of screen.
+       * ``y_off`` specifies the y offfset of the virtual display window from the upper-left corner of screen.
+
    * - ``passthru``
      - Indicates a passthrough device. Use the parameter with the format
        ``passthru,<bus>/<device>/<function>,<optional parameter>``