The main clinical manifestations of ligament stiffness are reduced joint mobility, joint stiffness, and joint dysfunction, which are often seen as complications after prolonged joint braking, external fixation of bone and joint casts or splints, and if the ligament stiffness occurs after prolonged braking, the mobility of the ligaments can be improved through local heat, rehabilitation techniques to train passive joint movement, and topical application of blood-stasis activating drugs. can be gradually improved. If the ligaments are stiff due to the lack of exercise habits and body fat, the flexibility of the limbs can be reduced by strengthening exercise, such as running and swimming, to restore the stretching activity of the ligaments, and the usual bath with mugwort can also make the ligaments flexible, because mugwort has the effect of unblocking the meridians and relaxing the tendons and activating the joints, which is also a rehabilitation method more often used in clinical practice.