After abortion, menstrual bleeding is particularly heavy, may be due to the uterine cavity has a residue, placed birth control ring, ovarian function recovery is not good and other factors, it is recommended to consult the doctor in a timely manner, in accordance with the doctor’s instructions to improve the relevant examination, given to the uterus surgery, drug treatment, and so on. 1. Residue in the uterine cavity: Incomplete abortion may cause residue in the uterine cavity, resulting in particularly heavy bleeding for the first menstrual period, need to comply with the doctor’s instructions for ultrasound examination, according to the actual situation of the choice of medication or purging treatment. 2. Placement of a birth control ring: If a birth control ring is placed during abortion, an increase in menstrual flow may occur due to the stimulation of the birth control ring. It is recommended to carry out ultrasound examination first to clarify whether there is any ectopic phenomenon of the birth control ring, if the position is normal, you can follow the doctor’s instructions to take oral medication to stop bleeding, if there is any abnormality, you need to take out the birth control ring. 3. Poor recovery of ovarian function: If other conditions are excluded, it is also necessary to consider the poor recovery of ovarian function after abortion, can be prescribed oral Yunnan Baiyao capsule, uterine blood capsule and so on. In addition, there are many other reasons that can cause particularly heavy menstrual bleeding after abortion, it is recommended to go to the hospital in time to avoid delaying the condition.