Heel tendon refers to the Achilles tendon in clinical practice. Pain in the Achilles tendon may be caused by physiological factors such as strenuous exercise, or it may be caused by trauma to the heel, Achilles tendonitis and other diseases. 1. Physiological factors: after strenuous exercise or long time walking, the Achilles tendon is continuously and repeatedly pulled, which causes spasm of the Achilles tendon and pain symptoms, which can be gradually improved after resting or applying local hot compresses. 2. Heel trauma: The pain caused by obvious bruising or edema of the Achilles tendon after trauma should be taken seriously, and the cause should be identified in time in the hospital to avoid delaying the condition. 3. Achilles tendonitis: the Achilles tendon stopping point is repeatedly pulled, thus forming aseptic inflammatory edema, causing pain. Heel tendon can also be tender and other reasons, exclude physiological reasons, patients should promptly consult a doctor to clarify the specific causes, and comply with the doctor’s instructions for treatment.