Lidocaine ointment is used to treat premature ejaculation and prolong the effect of sexual life time in men, but it should be used in accordance with the dosage under the guidance of a doctor, to avoid unauthorized use of drugs on the body to cause damage. Lidocaine ointment has the effect of local anesthesia, can be used for superficial surgery surface analgesia, can also be used for the treatment of skin itching, herpes virus neuralgia, can also be used to apply on the glans, reduce the sensitivity of the glans, so as to play a role in the treatment of premature ejaculation and prolong the effect of sexual life time. Pallor, erythema, and edema may occur after applying lidocaine ointment, and allergic reactions may occur in some people. The drug should be used under the guidance of a doctor and in accordance with the dosage, to avoid unauthorized use and damage to the body.