Herpes on legs is commonly associated with herpes zoster, an acute infectious skin disease caused by varicella-zoster virus infection. The initial infection with the virus manifests itself primarily as chickenpox or an occult infection. Subsequently, the virus lurks in the posterior root ganglia of the spinal cord. When the body’s immunity is low, the virus is reactivated and causes herpes zoster. Erythema, papules, and clusters of blisters with clear fluid may appear on the affected area, some of which rupture, forming vesicles and eventually crusting off. Herpes on the legs, it is recommended to take good care of the affected area, do not scratch and irritate to avoid inducing infection. It is recommended to go to the hospital dermatology department for examination, clear diagnosis, combined with the doctor’s advice treatment.