Usually, after delivery, the birth canal will discharge a blood-like secretion like menstruation. This kind of bleeding from the location of the placenta bed, mixed with secretions such as meconium, tissue fragments and mucus remaining in the uterus, is called bad dew. Postpartum discharge is usually eliminated in about 3 weeks, and the color of the discharge changes as it gets longer. According to the color and amount of discharge after delivery and the auxiliary examination, you can judge whether the discharge is exhausted or not. First, the judgment basis of postpartum discharge 1, according to the color of the discharge and the amount of discharge If the vaginal discharge is gradually reduced 3 weeks after delivery, and the color gradually changes from red to pink, until it returns to the transparent state of the discharge of the white belt, that is, indicating that the postpartum discharge is exhausted. 2, according to the auxiliary examination judgment 42 days after delivery, if the bad dew is not clean, the doctor will carry out gynecological examination and ultrasound, such as suggesting that there is no residue in the uterine cavity, and the uterus is well recovered, then it means that the bad dew has been discharged. Second, the post-partum discharge precautions 1, less than 50 days after delivery to absolutely prohibit sexual intercourse; 2, pay attention to disinfection, wash the vulva with warm water every day; 3, often change the menstrual pads and underwear, to prevent infection; 4, bed rest and recuperation, to maintain a relaxed mood; 5, pay close attention to the color of the discharge as well as the amount of change, in order to avoid post-partum hemorrhage; 6, the post-partum should be appropriate to get out of bed to exercise. Third, the treatment of the postpartum discharge not exhausted 1, drug treatment: applicable to puerperal infection caused by postpartum discharge not clean, need to give infusion anti-infection treatment. Follow the doctor’s instructions for treatment; 2, surgical treatment: such as ultrasound examination suggests tissue residue, drug treatment is ineffective, then must be performed to clear the uterus, after the operation to prevent infection and promote uterine contraction treatment.