The treatment for postherpetic neuralgia is mainly step therapy, that is, gradually adding to improve the pain relief treatment until the condition can be controlled. 1. Nutritional nerve therapy should be carried out for a long time, taking oral vitamin B1 and vitamin B12, methylcobalamin, etc. Post-herpetic neuralgia is one of the manifestations of incomplete repair of nerve damage.2. Use non-steroidal anti-inflammatory drugs, such as nabumetone capsules.3. Use special painkillers, such as gabapentin, pregabalin, etc., for better effect.4. Local physical therapy, such as red and blue light irradiation, helium-neon laser irradiation, etc..5. Use topical painkiller preparations, such as capsaicin ointment, etc. Sixth, perform local closed treatment, the main drug is tretinoin injection. The treatment of this neuralgia is more complicated, and face-to-face treatment is recommended.