After the abortion surgery with the embryo excluded from the body, the chorionic gonadotropin in the female body will drop rapidly, the performance of hormone recession after abortion, mainly the reaction of pregnancy will disappear, that is, the early pregnancy reaction will be obviously weakened or even not. Before the abortion, many people will have nausea, vomiting, fatigue symptoms, as long as the operation, these symptoms will be significantly relieved, in addition to drowsiness, poor mental health, poor appetite of these symptoms, but also will be significantly improved. So after the abortion as long as the early pregnancy reaction obviously improved or disappeared, it shows that the operation is more successful, of course, after the abortion chorionic gonadotropin to completely drop to the normal range, it takes about 15-20 days, so in a short period of time to do the test will still show positive.