The spatial diversity equalization algorithm based on multi-antenna receiving and equalization technology can suppress the fading effects and improve the receiver performance of the communication system. A novel spatial diversity blind equalization algorithm with lower implementation complexity and better equalization performance was proposed. The algorithm combined the weights of receiver-branches and equalizer into the blind equalization algorithm simultaneously. Simulation results showed that the proposed algorithm performed better than single channel equalization algorithm. And the influence of phase difference and time delay on the performance of the proposed algorithm were analyzed for the receiver-branches by simulation.