This paper presents a new intelligent control method which can lower the energy consumption and the pollution risk of electric bicycles. Lowering the energy consumption depends on improving the efficiency of energy transformation, and lowering the pollution risk depends on prolonging the service life of battery. Firstly, we organizes the acceleration model, then quantitative analysis are given to show the relationship between transient current and acceleration time, and the method of lowering the transient current during acceleration is given. Secondly, we determine the speed of motor when it is working at peak efficiency, at which speed the PID control algorithm is used to make the electric bicycles working. This method has been carried out on ARM processor.