Pathological nocturnal emission is complicated and can be caused by many reasons. Sexual tension can lead to nocturnal emission. Traditional Chinese medicine believes that the common diseases are kidney deficiency caused by unstable kidney qi and insufficient kidney essence. The cause can be caused by overwork and delusion. Poor diet, mellow wine, damp-heat accumulation and bet on damp-heat are also important reasons. Nocturnal emission is basically a physiological phenomenon. Because about 90% of normal adult men have had nocturnal emission. Spermatorrhea is divided into wet dream and spermatorrhea. It may occur after puberty 1 ~ 2 years old to old age. Nocturnal emission rarely occurs in boys under 12 years old, and the incidence of nocturnal emission in boys under 14 years old is about 25%, and the incidence of urban and family economic conditions is higher than that of male adolescents. 16 years old is about 55%, 18 years old is about 70%, and 20 years old is about 75% ~ 80%. By the age of 45, at least 90% of men have had nocturnal emission under certain circumstances. The frequency of nocturnal emission is mostly one week 1 time or several weeks 1 time. Some surveys show that the occurrence of nocturnal emission is directly proportional to the level of education. According to a survey, there are 18% single men with junior high school education, while there are 30% ~ 46% single men with college education, with an average of 1 time of spermatorrhea per month.