Postherpetic neuralgia is mainly postherpetic neuralgia, most patients with postherpetic neuralgia can be cured after regular treatment, some patients are difficult to cure. Postherpetic neuralgia often manifests as neuralgia that lasts for more than one month after the healing of herpes zoster rash, and its pain persists and may reappear after a brief period of relief. Most patients have a better prognosis after regular treatment, and commonly used treatments include medication, neurointerventional techniques, ultraviolet irradiation, infrared or ultrashort wave irradiation, and so on. Commonly used drugs include lidocaine, morphine, pregabalin, etc., all of which should be used in accordance with medical advice. However, patients with tumors of advanced age, poor physical condition or undergoing radiotherapy are more difficult to treat, difficult to be completely cured and have a poorer prognosis.