The utility model discloses a double-energy-accumulator braking energy recovery system based on a hydraulic mechanical continuously variable transmission. The system comprises a brake energy recoveryand release unit and a hydraulic mechanical continuously variable transmission, hydraulic brake, braking energy transmitted on the driving wheel is transmitted to the hydraulic motor through a transmission gear of the hydraulic mechanical continuously variable transmission; the hydraulic motor controls the braking strength by controlling the displacement, mechanical energy is converted into hydraulic energy through the hydraulic motor, and the hydraulic energy is transmitted to the low-pressure energy accumulator through the three-position four-way proportional electromagnetic valve and the two-position two-way valve and stored in the low-pressure energy accumulator. The high-pressure energy accumulator provides energy to drive the vehicle to advance; hydraulic energy in the high-pressureenergy accumulator is transmitted to the hydraulic motor through the two-position two-way valve and the three-position four-way proportional electromagnetic valve; at the moment, the hydraulic motor is in a motor working condition, hydraulic energy is converted into mechanical energy, the converted mechanical energy is transmitted to the hydraulic mechanical continuously variable transmission to drive the vehicle to advance, and control over the driving force of the vehicle is achieved by controlling the displacement of the hydraulic motor.