Precautions for medical abortion: 1. First, do B-ultrasound examination to confirm intrauterine pregnancy, and yolk sac can be seen in the gestational sac before confirming normal pregnancy. 2, need to check blood routine, leucorrhea routine, qualified rear can drug abortion. 3, in strict accordance with the doctor's advice to take medicine, so as not to affect the curative effect, leading to drug abortion failure. 4, drug abortion generally in the last time to eat misoprostol, observation for 2-6 hours will discharge pregnancy products. If vaginal bleeding exceeds menstrual flow and exceeds 150ml during the observation period, it is recommended to have an emergency curettage operation.