Clinical sex life is not lasting generally refers to premature ejaculation. It may be caused by excessive sensitivity of the glans, mental stress, disease and other reasons. 1. high sensitivity of the glans: commonly found in men who are circumcised or circumcised, mainly due to the glans being wrapped by the foreskin for a long time and unable to be exposed, which can easily increase the sensitivity of the glans and cause the penis to be unable to last, leading to premature ejaculation. 2. Mental stress: excessive psychological pressure during sexual intercourse and lack of inner relaxation may also cause the penis not to last leading to premature ejaculation. 3. Diseases: If you suffer from seminal vesiculitis, prostatitis and other diseases, due to the stimulating effect of inflammatory substances, it may lead to sexual dysfunction in men, which in turn leads to the phenomenon of penile erection not being able to last and premature ejaculation. The cause of premature ejaculation is complex, it is recommended that the patient go to the regular hospital in time, clear cause of the disease, under the guidance of professional doctors to take targeted measures.