Ectopic pregnancy application of embryocidal injection treatment is a kind of conservative treatment of ectopic pregnancy, and the main indicators of clinical judgment of success are the gradual shrinkage of the gestational sac and the gradual decrease of HCG level. Clinically, for early ectopic pregnancy, the size of the gestational sac is small, the symptoms are not obvious, you can choose conservative treatment to deal with, the specific treatment is the extracorporeal injection of fetal killing drugs. After that, observe the change of the specific gestational sac and the change of HCG level, the size of the gestational sac gradually shrinks, HCG level gradually decreases, which is suggestive of the success of the embryo killing a manifestation. In the process of conservative treatment, we should pay attention to closely monitor the clinical symptoms, once there is obvious abdominal pain, bleeding, we need to consult a doctor in time to observe, after diagnosis, under the guidance of the clinician to carry out standardized treatment, to avoid delays in the condition.