Based　on　previous　studies　about　the　contact　resistance　model　and　the　conductive　paste,　the　contact　resistance　model　for　the　busbar　joints　lubricated　by　contact　aid　compounds　is　formed.　The　relation　between　the　contact　aid　compound＇s　technical　parameters　and　the　contact　spot＇s　microscopic　parameters　is　established.　Using　this　model,　the　numerical　calculation　and　analysis　to　the　contact　spot＇s　microscopic　parameters　and　the　electrical　contact　properties　are　made,　and　some　results　are　obtained.　The　computer　simulation　of　the　electrical　contact　phenomena　is　realized　initially　under　lubricated　and　un-lubricated　case.