Foot joints ringing, common causes are joint instability, osteoarthritis, etc., as follows: First, joint instability: most of the congenital development factors caused by the patient will show a significant increase in joint mobility than the normal range, prone to sprains, wear and tear of the joint surface than normal people, in the foot joint activities will appear joint ringing. At this time, through the muscle exercise around the joint and the use of ankle protection, the symptoms can be alleviated. Second, osteoarthritis: osteoarthritis is formed when degenerative changes occur in the ankle and other joints, and the cartilage of the joint surface is severely damaged, so the patient will have a strange sound in the foot joint when moving. Surgical treatment such as arthroscopy will partially restore the flatness of the joint surface, and the foot joint rattling will gradually reduce or even disappear completely, but post-operative rehabilitation exercises are still needed to protect the joint.