HCG begins to fall 2-3 days after abortion and usually falls to normal by the 3rd week after surgery. After abortion, chorionic villi and embryonic tissues are removed, and it can drop to normal in about 3 weeks. If HCG is still high in the 3rd postoperative week, the possibility of incomplete abortion cannot be ruled out, and the patient should have a timely review of the ultrasound to understand the situation of the uterine cavity. If there is any uterine cavity residue should be cleared in time, postoperative routine application of anti-inflammatory, hemostatic drugs. If HCG still does not fall to the normal range 1 month after the abortion, the possibility of trophoblastic disease should be considered. In addition, after abortion, patients should also prohibit sexual intercourse for 1 month, pay attention to warmth, avoid eating cold, spicy and stimulating food, avoid taking a bath, keep the vulva clean and dry, oral motherwort granules, new biochemical granules, to promote uterine regeneration, and regular recheck HCG.