With the further development and application of social intelligent security technology, social buildings will be more fully protected from the safety in the process of construction and use. In this paper, we will focus on the importance of applying the security engineering technology of building, deeply study its structural model, main functions, etc., and study the main problems existing in the actual use of the current system and its reasonable setting method, and predict its future direction of vigorous development of science and technology, so as to promote the further healthy and vigorous development of system security engineering.