When an ectopic pregnancy occurs during IVF, it should also be treated accordingly according to the principles of ectopic pregnancy management. If the mass is not larger than 3 cm and the blood HCG is less than 3000 IU/L, there is no internal bleeding, no corresponding symptoms such as lower abdominal pain, you can treat conservatively, for example, you can take oral mifepristone to kill the embryo of ectopic pregnancy and then mechanize and absorb it. If there are corresponding symptoms with severe internal bleeding, regardless of the blood HCG level, emergency surgery is needed to remove the embryo or to remove the fallopian tube if there is no way to preserve it. Therefore, the principles of management of ectopic pregnancy caused by in vitro fertilization are the same as those of ectopic pregnancy caused by other reasons.