Cesarean section knife suture pus, may be due to low immunity, infection and other reasons, can take incision dilation, disinfection and change of medicine, antibiotics to prevent infection and other methods to alleviate the symptoms. 1. Low immunity: After the cesarean section, the mother’s body is weaker, lower resistance, low immune function, if the mother is accompanied by obesity, diabetes, etc., this situation is not conducive to the healing of the wound, and is prone to cesarean section stitches pus. Should be timely symptomatic treatment of pregnant women’s pre-existing diseases, and timely medical care, incision dilation, disinfection and change of medicine, while taking antibiotics to prevent infection. 2. Infection: If the sterilization is not strict during the surgical operation, causing contamination, it will cause poor healing of the incision, pus, infection and so on. In addition, if the mother does not standardize the care of the incision, it will also lead to the occurrence of infection, which will lead to the occurrence of cesarean suture pus. In this case, the incision also needs to be dilated, sterilized and changed, while taking antibiotics to prevent infection. Therefore, if the mother has a cesarean section with pus, it is recommended to consult a doctor in time, complete the relevant examination, clarify the cause of the disease, and symptomatic treatment. It should be noted that the above drugs, should be used under the guidance of the doctor, avoid unauthorized use of drugs, so as not to cause adverse effects.