Abstract: This paper studied on the signal priority control strategy of trams intersection to make the tram priority in the intersection under the condition that the overall traffic capacity was not affected, carried out the simulation and evaluation of tram intersection without signal priority, absolute signal priority and conditional signal priority control by using VISSIM tools, verified the applicability of signal priority and conditional signal priority control strategy.The conclusion is drawn by simulation that: if the tram is the highest priority, the average delay time of trams is the minimum and the number of stops is 0, the absolute signal priority control strategy is better. If the average delay and service level of the intersection are basically not affected, the tram signal priority is given, and the conditional priority signal control strategy is better.