Achilles tendonitis can cause pain in the area behind and above the heel. The Achilles tendon is a large tendon located behind the ankle joint that connects the muscle groups at the back of the lower leg to the heel bone and is indispensable for movement. Overuse due to various reasons, such as overloaded sports, frequent running, climbing, etc., can lead to chronic injury to the fibers of the Achilles tendon and cause Achilles tendonitis. Achilles tendonitis mainly occurs in the mid-portion of the Achilles tendon by the distal end of the position, that is, the Achilles tendon stopping point proximal to the range of 2 to 6 cm, so it will cause pain in the back and above the heel area. Achilles tendonitis can cause pain in the above areas, and due to the pain of movement can also lead to activity dysfunction, so when the above symptoms occur, it is recommended to go to the hospital for further diagnosis and treatment in a timely manner.