Abstract: This paper showed the progress on motor function of metatarsophalangeal joint and its applications in the field of sports science.The metatarsophalangeal joint, which is a longneglected joint, has now been considered again by researchers and coaches.Its potential roles in increasing sports performance have been re-examined.In the present study, we have summarized the advancements in the motor function of metatarsophalangeal joint within the following three major aspects:1) functional anatomy and movement characteristics;2) energetics and sports performance:3) training and related shoes.This paper has showed that the key points to understanding the function of metatarsophalangeal joint and its relation to the motion of the foot and low-limb are how to improve the mechanical effects of metatarsophalangeal joint on the flexion and extension movements, effectively reduce the energy absorption at the metatarsophalangeal joint, and enhance the ability of anti-fatigue, energy return, and sports performance.The research on the biomechanical characteristics of metatarsophalangeal joint, including the relationship between the joint and energy contribution, can also provide a new direction for understanding the optimization of human locomotion and sports-related apparel.