Extracorporeal ejaculation can affect sexual function through the psychological, nervous and endocrine systems, resulting in sexual dysfunction. Normal male sexual function generally includes the processes of sexual desire, sexual arousal, penile erection, sexual intercourse, ejaculation and orgasm, which involve the participation of normal psychological, nervous, endocrine systems, vascular systems and normal reproductive systems. Extracorporeal ejaculation is a method of ejaculating outside the partner’s body by withdrawing the penis when ejaculation is about to occur during sex. In the whole process of sexual life, the male sexual response is completed under the control of the cerebral cortex, the sudden termination is easy to induce sexual neurasthenia, affecting the normal sexual function in the problem of sexual desire and sexual excitement. At the same time the process of sexual intercourse due to sexual excitement at the climax of the forced interruption of sexual life, in vitro ejaculation, will make the central nervous system and lumbosacral ejaculatory center of the dysfunction, easy to suffer from functional ejaculation disorder. Therefore, extracorporeal ejaculation has a certain degree of influence on sexual function.