It is best not to have intercourse before checking the leukorrhea, so as not to affect the test results. Under the stimulation of coitus, the number of leukocytes in the vagina may increase significantly, and if you do not pay attention to cleanliness and hygiene during coitus, it will lead to abnormal cleanliness. In addition, after coitus, the vaginal mucosa is congested and edematous, and there may be residual sperm in the vagina, as well as the possibility of bringing bacteria into the vagina, leading to an increase in secretions, which will have an impact on the results of the leukorrhea test. If after intercourse, you can 48 hours before the routine examination of the leukorrhea, during the period try to avoid vaginal plugging, do not carry out vaginal douching, leukorrhea need to be sent to the examination in a timely manner after taking. For other routine gynecological examinations, it is best to abstain from sexual intercourse, and for cervical cancer examinations, it is usually necessary to abstain from sexual intercourse for more than 3 days to ensure the accuracy of the examination results. In addition, if a woman has obvious physical discomfort before the examination of leukorrhea, such as vulvar itching, increased vaginal discharge and other symptoms, she should pay more attention to avoid coitus, so as not to cause cross-infection, infected to the male partner, and need to be examined as soon as possible, and be given reasonable treatment.