Herpes zoster: Herpes zoster is a viral skin disease caused by varicella-zoster virus infection and is characterized by clusters of herpes and neuralgia along the nerves, the incidence of which is characterized by a proportional relationship with age. Postherpetic neuralgia (PHN) postherpetic neuralgia is caused by the neurophilic nature of the herpes zoster virus attacking the nerve endings. Due to the neurophilic nature of the herpes zoster virus, patients experience varying degrees of nerve pain at the onset of the disease, either before the onset of the rash or with the rash. Among the patients I have treated, the pain is more common in the thoracic intercostal nerve and the facial trigeminal nerve distribution area, and is a severe and persistent pain. Postherpetic neuralgia can be caused if the patient does not receive aggressive treatment during the onset of the disease or if a reasonable treatment plan is not chosen. The main clinical manifestation of postherpetic neuralgia is pain, which can be triggered by minor irritation or sudden attacks without irritation, and due to the time-sensitive nature of the virus, the pain can intensify at night, leading to sleepless nights, decreased body resistance, and a vicious cycle of deterioration. As there are several different types of postherpetic neuralgia, the symptoms are also different. Risk factors for herpes zoster to develop into postherpetic neuralgia: 1. older age (>50 years) 2. Female. 3. The presence of prodromal symptoms. 4. Severe lesions or disseminated rash? Severe pain (visual analog score >5). 5. Varicella zoster virusemia detected by PCR. Second, postherpetic neuralgia daily attention. 1. In terms of diet: do not eat pork, do not drink alcohol and carbonated drinks similar to beer. 2, in terms of action: do not move or less activity, pay more attention to rest. 3.In terms of emotion: don’t be sad, don’t be impatient, and be in a cheerful mood. 4, in terms of treatment: it is recommended never to take the destruction of the nerve method of treatment. Such as nerve sealing, cutting, blocking, freezing, laser irradiation, baking electricity, using analgesic pumps, injecting hormones, anesthetics, interferon, nerve-nourishing drugs into the nerve roots (or spinal canal), etc. Patients suffer from chronic pain, abnormal emotions, sleep disorders, loss of work ability and social activities, difficulty in ensuring the quality of life, loss of confidence in the future and even the thought of light life, and family members are also worried about this, which is more harmful than ordinary people can imagine. It is recommended to apply topical herpes oil in a timely manner, the medicinal effect through the meridians and channels, unblocked meridians, pass is not pain, in the process of use can play a very good pain relief, the prognosis will not produce post-neuralgia. Third, postherpetic neuralgia treatment. There is no effective treatment for postherpetic neuralgia, and most of them use a combination of nerve nutrition, peri-needle, fire can, local closure and other treatments. Botulinum toxin type A (Henley) multi-point subcutaneous injection of postherpetic neuralgia may act on the motor nerve prominence, interfering with the loss of acetylcholine and causing muscle relaxation; act on the postganglionic parasympathetic nerve prominence, interfering with the loss of acetylcholine and reducing sweat gland secretion; act on the injury-receptive neurons that transmit nociception and inhibit the release of substance P to reduce pain. The literature reports that the efficiency can reach 96.7%.