Abstract: Objective To analyze the statistical behavior of plantar pressure distribution, extract the characteristics of foot movement, and provide the possibility for gait recognition research to be used in medical clinical diagnosis, rehabilitation training and public health.Method By preprocessing the collected foot pressure data;performing statistical analysis on the data;, realizing the reconstruction of the footprints, and comparing and analyzing the pressure distribution rate of the footprints, segmented regions and each region, the foot motion characteristics are decomposed. Results. Based on the cross point of pressure peak curve in different regions, the plantar region is divided into four regions: toe region, metatarsal region, arch region and heel region, which can accurately extract the foot movement characteristics. Conclusions The peak plantar pressure is used to extract the characteristics of foot movement, which is divided into four stages: landing stage, whole foot contact stage, heel tiptoe stage and ground off stage.