The Achilles tendon is located above the heel of the foot and is one of the thickest and largest tendons in the human body. The Achilles tendon originates from the triceps muscle of the lower leg, i.e., the tendinous structure of the lower part of the muscle belly of the gastrocnemius muscle and the soleus muscle, and ends at the calcaneal tuberosity, which is located on the upper part of the heel. It is a thick tendon that can be clearly seen and felt, and is one of the longest and strongest tendons in the human body. It is the longest and strongest tendon in the human body. The Achilles tendon plays an important role in the body’s uprightness, walking, running, jumping, etc. If the Achilles tendon is injured, it will affect the function of the lower limbs. Factors such as improper exercise, excessive fatigue or trauma can easily cause Achilles tendon injury, so you should pay attention to warm up before exercise and avoid excessive exercise. If Achilles tendon injury occurs, you should immediately brake and rest, and take a brace or plaster etc. to immobilize, which will help recovery. In severe cases, surgery should be considered to repair the Achilles tendon.