The man with the age of sexual function will gradually decline, when the performance of sexual function decline mainly includes the following: 1, sexual life when the penis erection hardness is not enough or erectile dysfunction, called impotence, impotence will cause erection hardness is not enough or not enough time, resulting in unsatisfactory sex life. 2, sexual life when premature ejaculation, often not more than 3 minutes or not yet sexual life, already ejaculation, called premature ejaculation, is one of the main performance of male sexual function. It is recommended that male patients pay attention to the above situation, timely medical examination, under the guidance of doctors for regular treatment, can improve this phenomenon.