It is possible that tadalafil can be taken for 3 months to improve premature ejaculation to some extent. Small doses of tadalafil used for the treatment of erectile dysfunction can be taken for 3 months to improve erectile function, and after the improvement of erectile function, due to the increase of self-confidence, it may also have some effect on premature ejaculation. However, if the erectile function itself is normal, taking tadalafil has no significant effect on premature ejaculation, in which case dapoxetine hydrochloride can be taken to improve the situation. Patients with both erectile dysfunction and premature ejaculation can be treated with oral tadalafil, and if the improvement of premature ejaculation is not obvious, dapoxetine hydrochloride can be added. Patients with premature ejaculation alone can be treated with oral dapoxetine hydrochloride. These drugs have certain side effects, and need to be used to the hospital, under the guidance of the doctor’s reasonable application.