If there is a small amount of fluid in the uterus on the 20th day of labor, it may be physiological, and it is recommended to continue to review the situation. If there is a lot of fluid in the uterus, it may be caused by inflammation and should be treated with anti-inflammatory treatment. If there is a small amount of fluid in the uterus on the 20th day of labor, it is considered to be physiological, and may be due to the fact that the discharge has not yet been completely discharged. At this time, the mother can continue to observe, appropriate more activities to promote the discharge of bad dew, after the bad dew discharge can naturally disappear. If the amount of fluid is too much, it is often considered to be caused by inflammation. Inadequate postnatal care or poor physical condition may lead to infections in the reproductive system, which may lead to uterine fluid retention. Cefixime, azithromycin and other drugs can be used for anti-inflammatory treatment under the guidance of the doctor. The uterine fluid on the 20th day of labor is recommended to seek medical advice and treatment under the guidance of the doctor. And follow the doctor’s instructions for regular review. In daily life, pay attention to strengthen care, keep the pubic area clean and dry.