A painless abortion with a gestational sac of 1.5cm by 2.9cm usually results in a clean abortion. The best time for a painless abortion is 7-10 weeks, depending on the size of the gestational sac, within the range of the best painless abortion. If clinically experienced, most of them can be aborted cleanly. Only in the case of uterine deformity, poor position of the gestational sac and poor position of the uterus there is a possibility of not having a clean abortion. Generally, the ultrasound should be rechecked 1 week after the abortion to exclude the possibility of residual. If you are not going to get pregnant, you must do a good job of contraception; if contraception fails, go to the hospital as soon as possible to terminate the pregnancy as soon as possible under the guidance of the doctor. After the abortion need to pay attention to rest for 2 weeks, do not catch a cold, 1 month prohibit coitus, pay attention to the vaginal bleeding, if the bleeding as early as possible to the hospital.