Dacronin is a kind of local anesthetic, the main effect is local skin antipruritic, analgesic and bactericidal, usually used for mucosal surface anesthesia and skin analgesia, antipruritic, not for the treatment of erectile difficulties. Dacronin can block the conduction of nerve impulses, so as to achieve the role of inhibition of touch and pain, the skin has analgesic, antipruritic and bactericidal effect, can only improve premature ejaculation to a certain extent, can not treat erectile dysfunction. There are many factors that cause erectile difficulties, such as psychological factors, prostate disease, etc. It is not recommended to use Dacronin treatment by yourself. It is recommended that patients seek professional medical help, do not use drugs without authorization, Dacronin has a certain degree of skin irritation, may cause discomfort, should be used under the guidance of a professional doctor.