The method of expulsion of placental residue is related to the size of placental residue and the clinical symptoms of the mother, and is usually treated with drugs to promote uterine contraction or surgery. 1. Breastfeeding mothers with small amount of placental residue and no abnormal bleeding in the vagina can promote uterine contraction through diligent breastfeeding to facilitate the expulsion of placental residue. At the same time, you can take drugs to invigorate blood stasis, dredge the meridians and promote uterine contraction for treatment, such as motherwort granules, new biochemical granules, etc. For women who are not breastfeeding, in addition to the above mentioned drugs, they can also take mifepristone, which can help the uterus contract and promote the discharge of the residue; 2. For women with large placental residue and more bleeding in the vagina, they should have a timely operation to clear the uterus and apply appropriate antibiotics to prevent infection after the operation as prescribed by the doctor. If the placental residue is not cleaned up, it will easily lead to constant malignant fluid or heavy bleeding, and may also lead to irregular menstruation and uterine adhesions in the future. In addition, the mother needs to take the medication under the guidance of a doctor, and during the process of taking the medication, she needs to observe whether the residual material in the vagina is completely discharged and whether there is any bleeding. If the effect is not obvious after 3-5 days of taking the medication, or if the blood flow increases during the course of taking the medication, you should go to the hospital promptly and if necessary, have an operation to remove the uterus.