Dream sperm is also called dream emission. The reason for dream emission is that the amount of semen exceeds the storage limit of the seminal vesicles and epididymis, and a little stimulation can cause the semen to be discharged, and this phenomenon fully embodies the law of “when the water is full, it overflows”. Dreaming refers to semen loss during sleep and dreaming, which belongs to one kind of semen loss, and another kind of semen loss during waking up is called slippery semen. Ejaculation is a kind of ejaculatory activity in the absence of sexual intercourse, and it usually begins to occur after men reach puberty. This is a normal physiological phenomenon, is the embodiment of male secondary sexual characteristics, the normal range of frequency is the number of times a month in 4 ~ 5 times, as long as the normal range of health and work and study will not have an adverse effect, so there is no need to panic. If there are 3 to 4 times a week or more frequency of spermatorrhea, it is too frequent, may be a physical problem, should go to the hospital in time for medical examination and treatment.