Hi feirui445,

re:
> _ImportObj Open the specified file
> Do you have a shortcut code？
> like: script:moi.geometryDatabase.fileImportSubD( 'c:\\test.obj' );

_ImportOBJ is a plug-in so first you need to install it, you can get it at Max's file archive page:
http://moi.maxsm.net/media/files/

Install instructions here:
http://moi3d.com/faq#Q:_How_do_I_install_a_plug-in_script.3F

Then for the shortcut key you would put in:
_ImportObj

- Michael