Due to the characteristics of dense personnel, large collection of books and flammable facilities ，college libraries face serious challenge of fire emergency management .Revit was used to build the BIM model of the library. To analyze the change of visibility, temperature and CO concentration with time at the landings when a fire occurs, and obtain the available safe egress time (ASET) in each scene, using Pyrosim to build FDS model to realize the simulation of fire scene. Then, In order to gain require safe egress time (RSET),the agent-based model was established by using Pathfinder to simulate the evacuation of library fire emergency personnel. Finally, according to the results of comprehensive analysis of ASET and RSET, some suggestions on emergency management of library fire evacuation were put forward.