Abstract: The MUSIC algorithm based on array signal processing is widely concerned due to its super-high angular resolution and accuracy. However, its high computational complexity greatly limits the hardware implementation of the algorithm. Therefore, based on the basic principle of MUSIC algorithm, this paper analyzes the running time of the key sub steps in the DSP (TI1843) hardware system. Aiming at the most time-consuming and memory-consuming sub-steps of spatial spectrum construction and spectral peak search, a simplified method for engineering implementation is proposed. The feasibility of the algorithm is verified through hardware platform transplantation. Comparative experiments show that this method greatly reduces computing time and memory space.