The following hazards and side effects may be associated with the drug treatment of ectopic pregnancy, which is also known as conservative treatment: 1. The application of conservative drug treatment fails to completely kill the embryo and the pregnancy will continue, which will eventually require open surgery or treatment through laparoscopic surgery. 2. The main purpose is to kill the embryo of the ectopic pregnancy, which will cause the body’s resistance to decline or immunity to decline. If ectopic pregnancy is not indicated for surgery, conservative treatment should be given. Conservative treatment is much less harmful than no treatment for ectopic pregnancy, so even if the process of conservative treatment may cause certain side effects, the corresponding treatment should be given.