The invention provides a herpes zoster formula. The herpes zoster formula comprises the following raw materials by weight: 9g of radix bupleuri, 9g of small green tangerine peel, 9g of radix tetrastigme, 9g of silkworm excrement, 9g of honeysuckle, 9g of solanum lyratum, 9g of radix isatidis, 9g of fructus forsythiae, 9g of fructus rosae laevigatae and 9g of oldenlandia diffusa. According to the herpes zoster formula, the medicinal raw materials of radix bupleuri, small green tangerine peel, radix tetrastigme, silkworm excrement, honeysuckle, solanum lyratum, radix isatidis, fructus forsythiae, fructus rosae laevigatae and oldenlandia diffusa are matched, the medicinal material essence is improved, the medicinal effect complementation effect among the medicinal raw materials is enhanced, the overall medicinal effect of the medicinal raw materials is improved, the medicinal effect is maximized, the treatment time of herpes zoster is shortened, and the pain of people is relieved; and medical gloves need to be worn on hands, so that the medicinal raw materials are prevented from being affected with damp and mildewing due to the influence of hand sweat on the medicinal effect of the medicinal raw materials.