The common causes of jaw pain are as follows: First, the patient’s jaw is accompanied by oral malignant tumors, with the proliferation of tumor cells encroaching on the local nerves and tissues, it will cause obvious pain symptoms. At this time, patients need to improve the CT examination as soon as possible to clarify the size and scope of oral malignant tumors, and perform resection of malignant tumors as soon as possible, combined with local radiotherapy and systemic chemotherapy to kill the tumor cells in the body after surgery, so as to alleviate the symptom of pain in the lower jaw. Pain caused by local dental infection in the jaw. At this time, patients can take oral metronidazole tablets to control the infection in the oral cavity to reduce pain symptoms. If the tooth infection is serious with abscess formation, it is necessary to perform extraction of teeth in the lower jaw, compress the wound to stop bleeding and strengthen anti-infection treatment, and the symptoms of pain in the lower jaw can be relieved faster after the local infection is controlled.