Acyclovir ointment, which is mainly used to treat herpes zoster, herpes simplex, genital herpes and other skin diseases, is still effective. In addition to the use of acyclovir ointment alone, it can also be used in combination with oral acyclovir for treatment. The treatment is mainly applied to the affected area, 2h/time during the day, 6-7 times/day for a total of 7 days. If mild pain, burning or tingling sensation occurs, it may be an allergic reaction and needs to be discontinued. Be careful with the use, mainly for the skin mucous membranes, not for the eyes. Gloves should be worn when applying the medicine. Patients who are allergic to this product should be prohibited from using it, and pregnant women who are breastfeeding should use it with caution. Children must be used under adult supervision.