If there is still bad discharge two months after delivery, the cause should be clearly defined. If there is residual tissue in the uterine cavity, medication should be given to treat it and the uterus should be cleared if necessary; if it is caused by infection, anti-infection treatment should be given to it; or if it is caused by secondary choriocarcinoma, it can be treated by surgery and chemotherapy. 1. Uterine cavity residue: when there is placenta and fetal membrane tissue residue in the uterine cavity after delivery, it will affect the contraction of uterus and appear the manifestation of long duration of bad dew, which can be diagnosed clearly by ultrasonography, and it is necessary to carry out purging operation according to the doctor’s instruction, the operation should be gentle, and the scraped tissues should be examined by the pathological examination, and the antibiotics such as metronidazole and other antibiotic preventive treatments should be given according to the doctor’s instruction after the operation. 2. Infection: when there is infection, it can cause long duration of discharge, accompanied by bad smell and fever, etc. Combined with medical history and blood test to make a clear diagnosis, and it is necessary to use metronidazole and other antibiotics to prevent infection under the guidance of doctor. 3. Secondary choriocarcinoma: if secondary choriocarcinoma occurs after delivery, it may be persistent vaginal bleeding and unclean discharge. At this time, blood HCG test is needed to judge, HCG is still high or positive, considering choriocarcinoma is very likely, surgery and chemotherapy can be carried out according to the specific situation. When there is still bad discharge two months after delivery, you need to go to the hospital in time to find out the cause and deal with it positively.