HCG values change after pregnancy and doubling occurs in early pregnancy. If the HCG value is low it may affect the health of the fetus and cause an abnormal pregnancy, which will affect both the fetus and the pregnant woman.HCG value is not high but the fetus is healthy can be observed first, but regular testing and regular ultrasound should be done to keep an eye on the development of the fetus. If HCG value is too low and needs to be supplemented in time, consider intramuscular injection of HCG injection for fertility preservation treatment. HCG value is too low usually can be supplemented by food, eat more fresh fruits, such as grapefruit, strawberries, kiwi, etc., to give the body enough vitamin C, vitamin E, which can help progesterone to reach the normal level. In order to avoid miscarriage with preeclampsia, pregnant women with low HCG values should pay attention to rest, avoid strenuous exercise, and prohibit coitus if they are in the early stages of pregnancy.