Abstract: Sex is a normal action related to natural instincts，physiological and mental phenomena in human. It is even an eternal pursuit for man and woman to enjoy sex itself and the happiness associated with sexual life in their long life after they bear children. In general，good and healthy male sexual ability is the first factor for both man and woman to enjoy sex. The physiological and psychological differences in sexual reaction between man and woman can be minimized by their joint effort. Male sexual dysfunction，such as erectile dysfunction and ejaculatory dysfunction，unavoidably result in disappointment for both man and woman. Man and woman should be coordinated by the common sexual values and common beliefs. The good treatment for sexual dysfunction should be comprehensive with the help of modern medicines，and joint effort and continuous practice by both man and woman.

Key words: Sexual dysfunction, physiological, Sexual dysfunctions, psycological, Female, Male