HCG is usually measured 3 to 5 days after the second injection for conservative treatment of ectopic pregnancy to detect the effect of conservative treatment. Ectopic pregnancy conservative treatment systemic medication is often used methotrexate, which can inhibit trophoblast proliferation, destroy chorionic villi, and cause embryonic tissue necrosis and absorption. During the medication period, blood HCG should be measured every 3~5 days, if the blood HCG level drops <15% after two tests after the treatment, the medication treatment should be repeated, and the blood HCG level should be measured every week until the HCG drops to 5U/l. If the blood HCG level does not fall when tested during conservative treatment, then surgical methods of treatment may be an option. If a woman has persistent abdominal pain and other symptoms during the medication, it is recommended that she seek medical attention in time, under the guidance of the doctor, improve the relevant examinations, clarify the cause of the disease and treat the symptoms.