The common clinical causes of pain inside the chin are mainly the following conditions. First, multiple oral ulcers, oral ulcer trauma is large and multiple will cause local infection, causing obvious pain in the chin. Patients can rinse their mouth with light salt water, orally take metronidazole tablets, watermelon cream tablets to kill the bacteria in the mouth and promote the slow healing of the ulcer wound, thus reducing the pain symptoms of the chin. Second, the patient accidentally fell during strenuous exercise, resulting in a fracture of the chin, which can cause severe local swelling and pain. At this time, the patient needs to improve the X-ray and CT examination to clarify the specifics of the fracture. If necessary, surgery should be performed as soon as possible to relieve the pain and swelling of the chin and promote the early recovery of the patient’s condition.