The semen seen after seminal emission is a milky or off-white and slightly yellowish liquid, which is jelly-like at first and starts to liquefy after 25-30 minutes, and after liquefaction, it is a semi-transparent milky white and grayish-yellow liquid. Ejaculation is a kind of ejaculatory activity without sexual intercourse or masturbation, and it usually begins to occur after men reach puberty. Ejaculation is broadly categorized into two types: dream emission, which refers to ejaculation during sleep and dreaming, and slippery ejaculation, which refers to ejaculation during waking hours. The cause of seminal emission also fully reflects the law of “when water is full, it overflows”, when the amount of semen exceeds the storage limit of the seminal vesicles and epididymis, a little stimulation will make the semen discharge. Ejaculation is generally a normal physiological phenomenon, and will not have adverse effects on health and work and study. However, if seminal emission is accompanied by dizziness, sweating, loss of appetite, etc., or if it occurs frequently, then you should consult a doctor as soon as possible.