Ectopic pregnancy is also known as ectopic pregnancy. HCG values in ectopic pregnancy usually do not double every other day and mostly show slow growth. Both ectopic and normal pregnancies increase HCG values in the body, but it should be noted that the growth of HCG values in ectopic pregnancies is different from normal pregnancies and grows at a different rate. Ectopic pregnancy means that the fertilized egg is deposited and developed in a part of the body other than the uterus, because the gestational sac cannot obtain blood oxygen, resulting in a decrease in HCG secretion, which leads to a slower growth of HCG values and lower values than in normal pregnancies. If ectopic pregnancy is diagnosed, it should be actively treated under the guidance of the doctor to avoid hemorrhage. The HCG value alone cannot determine the location of the gestational sac, it is recommended to consult a doctor in time and follow the doctor’s instructions to improve further examination.