Snake sores are called herpes zoster in modern medicine. It is common in the elderly. This disease was first described in the “Treatise on the Origin of Diseases” of the Sui Dynasty (610 A.D.), “The sores are born around the waist, which are also born from wind and dampness fighting with blood, and look like a retort, hence the name.” In the Ming dynasty, the “standard rules of evidence and treatment” was called fire with sores, waist-waist fire Dan, and in the Qing dynasty, the “Great Success of Surgery” was called snake sores. Second, the etiology of varicella zoster virus. People are the only host of varicella-zoster virus, the first occurrence of chickenpox or recessive infection, after the virus can be long-term latent in the body. When the body is stimulated (such as trauma, fatigue, malignant tumor or post-illness weakness, etc.) resulting in a decrease in body resistance, the latent virus is activated, along the sensory nerve axons downstream to the area of the skin innervated by the nerve replication blisters, while the affected nerve inflammation, necrosis, neuralgia. According to Chinese medicine: 1. Liver heat due to internal injury, liver qi stagnation, and long-term fire. 2. 2, spleen deficiency and dampness, poor diet, loss of spleen health, dampness and heat, dampness and heat wrestling with the skin.