The vast majority of HCG increases are clinically due to illnesses related to pregnancy or caused by pregnancy. For example, biochemical pregnancy, ectopic pregnancy, normal early pregnancy, gravida or choriocarcinoma may cause HCG increase, so it is important to take the history into account. If a woman of childbearing age presents with a history of menopause and an increase in HCG, then clinically it is mostly related to pregnancy. Further examination is recommended. If there is an early pregnancy reaction and menopause for about 45 days, ultrasound can be used to find out whether there is a gestational sac in the uterus, and then further diagnosis can be made. But clinically, blood HCG increase is also seen in other diseases, such as cirrhosis of the liver, or patients with intestinal cancer may also appear blood HCG increase, so need to further examination.