Abstract: Intersection is the most typical type of crossing roads in the city ,whose design method of phase will in-fluence service level of the intersection directly .This paper takes Humen-Liansheng intersection as an example ,compares the characteristics of each phase for an entrance and symmetric phase ,and analyzes the traffic signal control performances of these two kinds of phase methods through the Vissim traffic simulation model under the peak traffic demand ,flat peak traffic demand and low peak traffic demand ,such as the average of delay ,the average of queue length ,and the average of stops .The simulation results show that the each phase for an entrance is suitable for the intersection whose flows are im-balance;on the contrary ,the symmetric phase is suitable for the intersection whose flows are balance .