If you are still not clean after 70 days, you need to treat the cause of the problem, if it is poor uterine regeneration, you need to promote contraction therapy, if there is any residue in the uterus, you need to clear the uterus, and if it is infected, you need to treat the infection with medication. 1. Poor uterine regeneration: this disease will cause long duration of bad dew, can follow the doctor’s instructions to give contractions and other drugs to promote contraction therapy. 2. Uterine residue: for ultrasonography suggests that there is a uterine residue, can also cause long duration of malignant discharge, can follow the doctor’s instructions in advance to open the venous access, blood preparation and ultrasound-guided clearance of the uterus, and postoperative antibiotics such as tinidazole should be given to prevent infection treatment. 3. Infection: When there is a combination of infection, not only will the symptoms of long duration of discharge, but also with odor, fever and other symptoms, combined with the clinical manifestations and blood tests, ultrasound examination can assist in the diagnosis, the need to comply with the doctor’s orders to give tinidazole, cefuroxime sodium and other antibiotics to fight combustion treatment. If the discharge is still not clean for 70 days, you need to go to the hospital in time and find out the reason under the doctor’s guidance and actively treat it.