To reduce the delay of public transport at a signalized intersection and improve the traffic efficiency, a signal priority method considering bus phase priority and non-bus phase compensation is proposed. First, the model of average passenger delay of the intersection is selected as the objective function in the algorithm of bus signal priority. Genetic algorithm is used to search for the optimal value. The selection of green extension ?Gt and early red ?Rt is studied. Subsequently, to reduce the effect of bus signal priority on the social vehicles, non-bus phase compensation is executed in the subsequent cycle. Finally, the intersection of Chaoyang Road and North Gaobeidian Road is taken as an example to demonstrate this method. The results show that the average passenger delay is reduced and the passing efficiency of social vehicle isn"t significantly degraded by using the bus signal priority and the non-bus phase compensation.