Abdominal pain on the 8th day of abortion is usually abnormal, under normal circumstances it is possible to have abdominal pain on the day of abortion, or within 7 days after abortion, and the abdominal pain gradually decreases from the beginning of abortion, not more than 7 days. This is due to the fact that most of the abdominal pain at this time is caused by uterine contractions, the remaining meconium tissue in the uterine cavity needs to be discharged slowly through uterine contractions, and the constant contraction of the uterus will show the manifestation of pain in the lower abdomen. However, this degree is gradually reduced, the vaginal bleeding will also gradually reduce, if to the eighth day there is still persistent abdominal pain or pain intensified, you should consult a doctor in time to rule out whether the abdominal pain is caused by post-abortion infection. It is recommended that the pathogen be identified and targeted treatment be provided.