Abstract: The level crossing (LC) is the intersection of roads and railways. In the event of a collision accident, it not only affects the efficiency of railway operations, but also causes casualties. Therefore, safety of LC is identified as critical point for both railway and road transit. To analyze the safety of LC, this paper proposed model based method to establish the model of LC, and put forward model checking method to analyze the safety of LC. It was used colored Petri net as analysis tool, established LC function model, designed algorithm of safety analysis, and verified the feasibility of colored Petri net on LC safety analysis.