A　kind　of　modeling　method　of　regular　ground　object　in　virtual　city　was　proposed　through　splicing　certain　spatial　simple　geometries　based　on　VC++　and　OpenGL,　which　combining　the　ground　objects＇　characteristics　with　modeling　realistic　demand.　This　method　firstly　generated　some　basic　shapes　(cylinder,　cone　or　sphere)　which　were　the　constituent　parts　of　regular　ground　object,　by　using　simplified　3D　basic　geometry　modeling　method　of　OpenGL.　Then　joined　these　basic　shapes　together　by　doing　coordinate　transformation　to　construct　the　regular　ground　object.　The　case　of　modeling　street　lamp　was　taken　as　an　example　to　introduce　the　ground　object＇s　modeling　methods　and　visualization　technology.　The　modeling　process　just　need　calculating　a　small　number　of　coordinates,　and　the　amount　of　data　is　also　very　low.　Experimental　results　show　that　generated　models　looks　very　real.