The hardware implementation method of the infrared weak and small target detection algorithm based on dynamic programming is proposed. Energy cumulative principle based on dynamic programming is ana? lyzed. The target distinguishing process is explained. The hardware resource for image processing is analyzed. A FPGA+DSP hardware process platform is established and the real-time and reliability of the algorithm are vali? dated. The proposed method can figure out the real-time problem that cannot be solved by the most algorithm and propose a new method for infrared weak and small target detection.