Abstract: The application of BIM improves the level of metro construction management，and the first task of BIM application is to create a BIM model． On the basis of analyzing the deficiency and existing problems of the present modeling technology，this paper studied the metro engineering and researched the modeling process using BIM technology by applying BIM related theory and combining with representative project cases． The method of analyzing the requirements of BIM model，BIM-based key modeling technology of metro engineering to raise model accuracy， modeling efficiency and management efficiency，modeling procedure and its related practical key points were raised， which solved effectively many problems such as low accuracy of the model，low modeling efficiency etc existing in the present BIM modeling work．