Trigeminal nerve pain in the face can affect people’s normal life, and the results of the diagnosis can only determine the medication and means of treatment, so it is recommended that patients are diagnosed and treated. Facial pain is mainly caused by trigeminal neuralgia. The trigeminal nerve is one of the twelve pairs of cranial nerves, named trigeminal because it divides into three branches as it exits the skull. The three main branches are the ophthalmic nerve, maxillary nerve and mandibular nerve. Branch I is a sensory nerve that innervates the frontal region of the eye, branch II innervates the maxillary and facial regions, and branch III innervates the mandibular region. The diagnosis of trigeminal neuralgia is mainly based on the patient’s clinical manifestations, generally do not need to carry out special auxiliary examination, when suspected of secondary trigeminal neuralgia, should be targeted to carry out the etiological examination. The main diagnostic points of trigeminal neuralgia are as follows: 1, the pain site is the distribution area of the trigeminal nerve or its branches, 2, mostly sudden onset of severe pain, the vast majority of patients do not have any pain when the attack does not occur, and a very small number of patients still have mild pain, 3, the majority of patients have a “trigger point”, i.e., the trigger point, stimulation of these points can cause a pain attack, but the attack has just passed. The majority of patients have “trigger points”, that is, trigger points, stimulation of these points can cause a pain attack, but the attack has just passed, and then stimulate the “trigger point” does not cause an attack. 4, more than 95% of patients with trigeminal neuralgia for the side of the 5, the onset of pain is not accompanied by symptoms such as nausea, vomiting, etc. The drug can be temporary relief of pain, but can not be relied on long-term medication will aggravate the condition of the hair Zhang, so it is recommended that the patients and friends of early treatment early recovery. So, it is recommended that patients get early treatment and early recovery.