After giving birth to a child, the pelvic floor muscles and the uterus tend to undergo relaxation, in the process of using medication abortion, there is a possibility that it will be insensitive to misoprostol, which may easily lead to the failure of medication abortion, rather than one step, directly do the purging treatment. Women who have not given birth to children, the uterine tension is higher, when taking misoprostol, the uterus can undergo a strong contraction, which can expel the gestational sac out of the body, and there is a lower failure rate of drug abortion. Therefore, when using medication abortion, the indications should be strictly controlled, if the indications are not well chosen, there is a possibility that the results will not be good, leading to the failure of abortion, and there may also be accidents.