Based on the analysis of disadvantages of present static distribution control strategies of clean energy vehicles regenerative brake system,vehicle operation parameters estimation algorithm is presented which is adapted to the configuration of clean energy vehicles.The algorithm effect is simulated in Hardware-In-Loop-Simulation environment.Maximum energy regeneration optimization strategy is given and the advantages of control effect are simulated using HILS.The simulation data shows that the optimized strategy proves the efficiency of brake energy regeneration and finishes wheel anti-lock effectively.