The slow decrease of blood HCG in conservative treatment of ectopic pregnancy is often clinically caused by the following reasons: First, the dose of drugs is not enough, the embryo is not completely killed and the blood HCG decreases more slowly. It is recommended to increase the dose of drugs to achieve the purpose of making the embryo die as soon as possible before the blood HCG can decrease. Secondly, it may be that the patient is not sensitive to the drugs used. It is recommended to change the drugs for treatment, mainly to kill the embryo to achieve the purpose of terminating the pregnancy before the blood HCG can drop. For patients with ectopic pregnancy treated conservatively, blood HCG must be closely monitored. No matter the original drug is used or the drug is changed for treatment, as long as the blood HCG rises, it means that conservative treatment has failed and surgery is clinically recommended.