Middle-aged men’s ejaculation is mostly a normal physiological phenomenon, but it may also be caused by pathological factors, such as chronic prostatitis, organ dysfunction, seminal vesiculitis and so on. 1. Physiological phenomenon: Ejaculation in middle-aged men is common in men who have not had sex for a long time, and after the production of semen can not be released, there is a phenomenon of semen overflow. There are also some middle-aged men who suffer from spermatorrhea due to masturbation and visual stimulation, which is a normal physiological phenomenon and does not require special treatment. 2. Chronic prostatitis: When middle-aged men experience frequent seminal emissions, they may have chronic prostatitis. As a result of the infectious agents stimulating the urethral mucosa of the prostate, the patient has different degrees of premature ejaculation, seminal emission and other symptoms of sexual dysfunction. At the same time, there will be inflammatory enlargement of the prostate gland, involuntary contraction of the seminal vesicles and easy contraction phenomenon, so that frequent spermatorrhea occurs in the sleep. 3. Organ dysfunction: when there is organ dysfunction, such as the central nervous system is not under the control of the cerebral cortex, the central nervous system of erection shows increased excitability, coupled with the body is in a state of fatigue, resulting in the strengthening of the activities of the cerebral cortex center, which is also prone to lead to spermatorrhea in middle-aged people. 4. Spermatitis: mostly caused by retrograde infection, due to the anatomical location and physiological structure of the characteristics of the reproductive tract is more likely to cause complications, in addition to the common pain, urinary frequency, urinary urgency and other symptoms, there will be spermatorrhea, premature ejaculation and other symptoms. After the occurrence of spermatorrhea, the first to determine whether it is physiological factors, after exclusion, should immediately seek medical treatment to avoid delays in the condition.