Half of the face and ear pain is mainly due to the following three reasons: First, trigeminal neuralgia, if all three branches are involved, it will cause half of the face, forehead, jaw angle and ear pain, discharge-like, pull-like pain, need to perform cranial magnetic resonance examination to understand whether there are intracranial lesions, identify whether the pain is caused by primary or secondary causes. Second, ask the patient if there is any inflammation in the oral cavity or dental lesions, some patients with dental lesions may also cause pain in the half of the face and ears. Third, ask the patient if there is shingles in the half face and ear pain, if there is neuralgia caused by herpes zoster in the head and face, the pain is also distributed along the nerves in the half face and ear.