There is a clear liquid outflow from the penis with sexual impulse, which is usually prostate fluid, mostly normal phenomenon. Prostate fluid is secreted by the prostate gland and is a substance normally secreted by the male reproductive system, which can promote sperm formation, maintain the health of the reproductive system, stimulate the vitality of the sperm, improve the quality of sex between the two sides, promote the liquefaction of semen and reduce the acidity of the girl’s vagina to promote the role of pregnancy. It is normal for prostate fluid to be secreted when there is a sexual urge, but it should be noted that at the same time as prostate fluid is secreted, a small amount of semen may also be overflowed, which may still lead to pregnancy. Therefore, the use of contraception during ovulation should be strictly carried out to avoid unwanted pregnancies, which will hurt the relationship and health of both parties.