The invention relates to a regenerative energy controller for an electric vehicle, which includes a main control chip, which respectively receives signals from a brake handle controller, an automatic control and a manual controller, an overcurrent and overvoltage protection circuit, and a voltage stabilization circuit, and is characterized in that it also includes: Two-way switch circuit, which is controlled by the main control chip, connected to the constant voltage and constant current charging circuit and boost circuit, as well as the battery and the boost circuit; boost circuit, which is controlled by the main control chip, connected to the motor controller and the switch circuit; The output control signal of the control chip is respectively connected to the bidirectional switch circuit and the boost circuit. After adopting the booster circuit, it can be artificially adjusted to a wide range of voltage from 10-25 volts to effectively use regenerative power to charge the battery. As long as the circuit detects that the vehicle has a red light, turns, or brakes when it is foreseen to stop, it can drive at high speed. When the vehicle is in a downhill state, the circuit is automatically converted into a charging state, which not only makes full use of the regenerative power, but also better achieves the braking effect on the wheels.