Generally speaking, 20 days of bleeding after abortion is not normal menstruation in most cases. Need to be further combined with the patient’s clinical symptoms, gynecological examination, gynecological ultrasound to further clarify the diagnosis: 1, if the patient has been dripping vaginal bleeding after abortion, this situation is mostly considered to be in the uterine cavity of the residual pregnancy tissue, need to be further combined with the gynecological ultrasound to clarify the diagnosis. If the gynecological ultrasound suggests that there is intrauterine pregnancy tissue residue, you need to carry out further purging surgery. 2, if after the abortion has been no bleeding, in the abortion 20 days of vaginal bleeding. This situation may be due to the woman’s return to ovulation, ovulation bleeding. 3, in addition to the woman after the abortion 20 days of bleeding, may also be due to the uterus contraction is not good, poor recovery, need to be further combined with the patient’s condition to clarify the diagnosis.