In the braking process of new energy vehicles, in order to allocate braking force reasonably, ensure stable braking of the vehicle under various working conditions, avoid dangerous situations such as wheel lock up and side slip, and improve the braking safety of the vehicle, a hydraulic braking force optimization distribution control system for new energy vehicles is designed. Based on hardware data collection, obtain the front axle braking force distribution coefficient and electro-hydraulic braking force distribution ratio of new energy vehicles, and use particle swarm optimization algorithm to achieve multi-objective optimization distribution of hydraulic braking force. Based on the multi-objective optimization allocation results, a collaborative controller is designed to achieve coordinated control of hydraulic braking and motor regenerative braking using the optimal hydraulic compression power multi-objective optimization allocation scheme. The experimental test results show that the designed system has a high degree of fit for high adhesion road braking, low adhesion road braking, and low adhesion road steering braking, indicating that the safety and stability of the designed system are high.