Bleeding one month after abortion may be caused by incomplete abortion, infection in the uterine cavity or poor uterine recovery. 1. Incomplete abortion, after abortion surgery, there will generally be a small amount of bleeding for 3 to 10 days, if there are residues in the uterine cavity after the operation is not clean, it will lead to a long time after the abortion bleeding, dribbling. Abortion one month and bleeding to do ultrasound in time to check whether there is residue in the uterine cavity, comply with the doctor’s medication, purging treatment. 2. Uterine infection, abortion surgery is an invasive operation, such as surgery, aseptic measures are not standardized or postoperative care is not appropriate, may cause intrauterine infection, thus causing bleeding phenomenon, accompanied by abdominal pain and lumbar pain, fever and other discomforts, follow the doctor’s instructions to take levofloxacin, metronidazole and other drugs to fight infection treatment. 3. Poor uterine recovery, after abortion due to poor uterine contraction, resulting in the uterus can not be recovered for a long time, there will be a month of abortion and bleeding phenomenon, accompanied by abdominal pain, lumbar pain and other discomforts. You can use medication to promote uterine contraction to help recovery. Patients with vaginal bleeding one month after abortion surgery are advised to seek timely medical examination and symptomatic treatment.