With the vigorous development of the electric vehicle industry in China, the problem of charging electric vehicles has gradually emerged and become a bottleneck restricting the development of this industry. The long charging time of electric vehicles, the insufficient number of urban charging piles and the uneven distribution of urban charging stations are the direct reasons for the charging problem. We propose a charging scheduling algorithm for electric vehicles based on traffic conditions. It schedules the charging vehicles in a unified manner by comprehensively considering the actual situation in the road network. In addition, a vehicle scheduling model is established and simulation experiments are carried out. The results show that the algorithm can reduce the charging time of electric vehicles, balance the loads of charging stations in a region, and improve the overall charging efficiency.