Chorionic gonadotropin injection is also known as human chorionic gonadotropin injection, due to the human chorionic gonadotropin level drop caused by the aura of miscarriage, early pregnancy chorionic gonadotropin injection to protect the chances of higher, due to other factors caused by the miscarriage, the chorionic gonadotropin injection to protect the chorionic chorionic gonadotropin chorionic gonadotropin injection is not necessarily high odds. In early pregnancy due to low levels of human chorionic gonadotropin triggered by preeclampsia, injections of human chorionic gonadotropin to raise the level of hormones in the body, the success rate of birth control is relatively high. However, there are many reasons for preterm miscarriage, some women have preterm miscarriage in early pregnancy due to low progesterone levels, and at this time, progesterone should be injected to preserve the fetus, and the effect of preservation of the fetus is relatively good. Some people are not good quality embryos caused by the miscarriage, in this case the chorionic villus injection may not be able to preserve the success of this situation is not generally recommended to continue to preserve the fetus, natural abortion is better. The chorionic villus injection in early pregnancy has a high chance of preserving the fetus, to comprehensive individual pregnancy to judge, it is recommended to go to the hospital to check and then medication to preserve the fetus treatment.