Half of the face hurts, the common clinical causes are mainly the following: a. The growth of wisdom teeth and tooth infection in the mouth can cause acute inflammation in the oral cavity, thus causing swelling and discomfort in half of the face, which can be controlled by oral metronidazole tablets, swelling pain and other drugs to control the infection and pain in the oral cavity. If the inflammation is heavy and the pain is not relieved, the wisdom teeth and the festering teeth need to be surgically removed and the infection in the mouth can be controlled by intravenous use of cephalosporin antibiotics, and the swelling of the face can be relieved more quickly. Second, inadvertent fall during strenuous exercise can cause soft tissue damage to the face, resulting in obvious swelling and pain. At this time, local ice can be applied to reduce tissue exudation, and after 24 hours, hot ointment pack can be applied externally, blood circulation and stasis cream can be applied externally, and drugs such as swelling and pain and bruising pill can be taken orally to promote faster relief of facial muscle pain. Trigeminal neuralgia and temporomandibular joint disease should also be considered