The tendon of the heel is called the Achilles tendon, which is made up of the tendon of the gastrocnemius muscle and the tendon of the flounder muscle, and is relatively thick. In the process of movement, it will be repeatedly stretched, which will easily cause Achilles tendon injury. Mild cases will only have local pain, restricted movement and local pressure pain, and the symptoms will disappear completely after rest and braking. In more serious cases, Achilles tendon rupture will occur, and the patient will not be able to exercise normally, but the range of motion of the ankle joint will be affected. If left untreated for a long time, secondary atrophy of the calf triceps may also occur. MRI can detect different degrees of damage to the Achilles tendon. If rupture occurs, surgical treatment needs to be considered to restore the integrity of the Achilles tendon and its function through surgical suturing, which can enable the patient to live, work and exercise normally.