Men always do not ejaculate during intercourse, which may be caused by organic lesions of the reproductive system, functional lesions of the reproductive system and drug inhibition. 1. Organic lesions of the reproductive system: organic lesions of the reproductive system, such as prostate hyperplasia, prostate cancer and ejaculatory duct stenosis, can lead to ejaculation pathway obstacles, which can cause men to always not ejaculate during intercourse. 2. Functional lesions of the reproductive system: due to too much anxiety, long-term stress, frequent masturbation and other reasons, leading to male ejaculation center is inhibited or ejaculation center threshold, will lead to men in the same room always not ejaculate. 3. Drug inhibition: long-term use of sedative or anti-anxiety drugs for men, such as scopolamine butylbromide capsules, phenobarbital tablets, oxazepam tablets, etc., may be due to the drug to make the ejaculatory center inhibition, thus causing men in the same room always do not ejaculate. Men always do not ejaculate during intercourse may also be caused by drugs or retrograde ejaculation after prostatectomy. If this kind of situation occurs, and accompanied by other discomfort, has affected the normal life, must go to the regular hospital to find out the cause of the disease, and actively cooperate with the professional doctor’s treatment.