During intercourse, if the man wears a condom, the white vaginal fluid may be leukorrhea; if the man does not wear a condom, the white vaginal fluid may be a mixture of leukorrhea and semen. During coitus, women under the action of sexual stimulation and estrogen, vaginal secretions will increase, sometimes there will be vaginal white liquid out. At this time, if the man wears a condom, semen will not enter the vagina, then this liquid may be leucorrhoea; if the man does not wear a condom, semen ejaculated in the vagina, there may be a small portion of the outflow of the vagina, then this liquid may be a mixture of leucorrhoea and semen. Before coitus, you should maintain pubic hygiene to avoid pathogen infection; do not be too strenuous during coitus to avoid damage to the body; if there is no desire to get pregnant, you should do a good job of contraceptive measures, and so on. Women who have abnormal leukorrhea after intercourse are advised to go to a regular hospital and be treated under the guidance of a doctor so as not to affect their health.