Ligaments are dense connective tissues that are relatively ductile and rigid, and strong ligaments at joints can prevent joint dislocation, such as shoulder joints and knee joints, which are prone to dislocation and misalignment. The ligaments of internal organs, such as the hepatic round ligament and uterine ligament, have the function of protecting internal organs and can make their anatomical position relatively stable. There are breast suspensory ligaments in the breast, if the breast suspensory ligaments are loose it will lead to breast sagging and the whole body shape will become unattractive. Basketball players and soccer players have stronger ligament protection, which also determines the upper limit of athletic ability, less prone to injury and better explosive power.