In order to improve the utilization of laser communication channels and eliminate inter symbol interference, a channel equalization method for high hertz laser communication is designed. Based on the structure of laser communication network in the high Hertz frequency band, statistical mathematical methods are selected to construct a channel model of the laser communication network. Using the direct spread spectrum registration method in the high hertz frequency band, process multiple outputs of the channel equalizer and register the laser communication channel. The communication signal output by the channel equalizer is treated as a filter with finite pulse response, and a Toeplitz structure sensing matrix is constructed using pseudo noise sequences to estimate the phase of the laser communication channel. Based on the pseudo random sequence of the channel, the impact response of the laser communication channel is generated using the channel phase, and parallel communication of the channel is considered to achieve channel equalization processing in the high hertz laser communication network. The experimental results show that this method can achieve channel equalization in high hertz laser communication, with a communication error rate below 0.001 and superior channel equalization performance.