The white fluid flowing from below is a phenomenon encountered by both men and women. In the case of women, it is usually considered to be leukorrhea, which is a normal vaginal secretion formed by a mixture of vaginal mucous membrane exudate and cervical mucus, and flows out through the vagina under the action of estrogen. If it is a male, it is usually semen, prostate fluid, etc. A, women’s normal leucorrhea presents egg white or white paste, with a sticky texture, no fishy odor and relatively small amount. Before and after menstruation because the pelvis has a certain degree of congestion, vaginal mucosal exudate and cervical mucus increases, and the amount of leucorrhea also increases. If the white vaginal fluid is not accompanied by any physical discomfort, it is usually normal and you should pay attention to personal hygiene. The estrogen level of pregnant women will increase significantly and the vaginal fluid may appear milky white, which is a normal physiological phenomenon. In late pregnancy, the mucus plug at the end of the cervical canal may even be discharged from the vaginal opening. As long as the mucus plug is clear or milky white, it is a normal physiological phenomenon and does not require special treatment. Second, male men are mentally or physically sexually stimulated after the urethra outflow is usually milky white or translucent liquid, a mixture of semen and prostate fluid formed, is a normal physiological phenomenon. In addition, there may be some pathological conditions. If a woman’s vaginal flow of white fluid is accompanied by vulvar redness, itching, and discharge with a distinct odor, it suggests vaginal inflammation, and she needs to go to the hospital for a routine leukostatic examination to confirm the pathogens and then treat them accordingly. If the discharge is creamy or tofu-like, mycosis vaginalis is considered and is often accompanied by severe vulvar itching or burning pain. If the fluid is off-white and has a thin vaginal discharge with a fishy odor, it is usually bacterial vaginosis and is also accompanied by some mild vulvar itching. In men, white fluid discharge, if accompanied by stinging urine and burning urine, is usually seen in non-gonococcal urethritis. In addition, patients with prostatitis, due to prostate congestion and edema, also tend to flow white prostate fluid from the penis.