According to existing problems of building-architectural budget course, we proposed an overall reform of the teaching ideas to solve the problem of inadequate engineering practice of students. In accordance with essential teaching and plenty of practice, we carried out a comprehensive practical teaching reform from many aspects such as teaching content, teaching methods, practice teaching, teacher training, and evaluation system. Followed with the development of information technology, we adopted advanced computer software in teaching to enhance the efficiency and quality of the project cost management. After three years of teaching reform, we have achieved remarkable results. The students have a general increase in the engineering practice ability and their overall comprehensiveness has been greatly improved, which made them received acceptance and praise of the employing unit.