It may be normal to have a small amount of bleeding after 20 days of normal labor because the uterus has not yet recovered after delivery, and the malodex is usually discharged for 2-3 weeks, so it is normal to still have a small amount of bleeding after 20 days. If there is a lot of bleeding and bright color, it may be an abnormal condition caused by residual material in the uterine cavity, and only then it needs to be clearly diagnosed by ultrasound examination. Common causes 1. normal situation: when the mother’s uterus has not fully recovered after 20 days of normal delivery, the malodex is not yet clean, so a small amount of bleeding can occur; 2. abnormal situation: if there are residual substances in the uterine cavity after delivery, such as placenta, fetal membranes, blood clots, etc., they will be expelled during the contraction of the uterus, which may damage the vaginal mucosa in the process and cause a large amount of vaginal bleeding. Treatment methods 1. breastfeeding: breastfeeding mothers can promote contraction and repair of the uterus by breastfeeding diligently to relieve the symptoms of bleeding; 2. drugs: if the vaginal bleeding is caused by placental residues, you can apply medicines such as motherwort granules and new biochemical granules under the guidance of the doctor to promote the discharge of residues and relieve the symptoms of bleeding; 3. scraping: if the placental residues are large and large, timely scraping should be performed to remove the residues. If the placenta residual material is large and large, timely scraping should be performed to remove the residual material. Attention: It is recommended that the mother should reasonably breastfeed, pay attention to rest, strengthen nutrition, appropriate activities, and keep the vulva clean. If the bleeding increases or is bright red, it is recommended to go to the hospital in time for ultrasound and routine examination of the white belt to exclude any other organic diseases.