This paper aims to explore the major factors influencing teaching quality of BIM in this mode. Firstly,The BIM competition-related data is obtained by questionnaire. Secondly,the major factors influencing teaching quality of BIM in this mode is given based on decision tree. Thirdly,an experiment based on support vector machine is carried out to verify that the above factors is indeed the major factors influencing teaching quality of BIM. Finally,the above major factors are analyzed combined with the students surveyed.. The major factors influencing teaching quality of BIM include students' participation in other affairs,students' understanding of software before training,students' attention to the competition,the conflict between training and daily courses,computer equipment during the training,etc.