Energy recovery technology can enhance the pure electric range of new energy vehicles and is one of the core technologies of new energy vehicles. This paper systematically analyzes the influencing factors of energy recovery function and introduces the energy recovery control strategy of a hybrid electric vehicle with a series parallel structure. The energy recovery function can be divided into three categories：braking energy recovery，coasting energy recovery，and the switching control between braking energy recovery and coasting energy recovery. Through the development of energy recovery strategies，the fuel economy and pure electric range of the vehicle can be effectively improved.