A High Pressure Thermal Fluid Brake and Engine Energy Recovery System is provided, comprising a plurality of interconnected energy collection system and energy storage system, and a control unit connected with the energy collection system and the energy storage system. The control unit is connected with the vehicle controller to at least read and collect acceleration pedal position information, brake pedal position information, vehicle travel parameters and cooling system parameters of the vehicle. The energy collection system recovers vehicle kinetic energy, engine mechanical energy and engine thermal energy and stores the recovered energy in the energy storage system. The control unit controls the energy recovery and release of the energy collection system and the energy storage system according to the vehicle information read and collected. This system can effectively recover vehicle braking energy, engine idle energy and engine heat energy and reuse, reduce the energy waste of motor vehicle system to achieve the purpose of energy saving, fuel saving and emission reduction.