HCG at 43 days of pregnancy is usually normal above 10,000 IU/L. HCG fluctuates in a wide range and the growth and development of the embryo cannot be determined by the value of HCG alone. At 43 days of pregnancy, it is important to check the elevated range level of HCG, and it is important to check the fullness of the gestational sac in the uterine cavity, as well as the appearance of the fetal bud and good fetal heartbeat, in order to diagnose a normal intrauterine pregnancy. A small number of women may have a slightly lower HCG level, but as long as the intrauterine gestational sac is full, the fetal heartbeat is good, and there is no lower abdominal pain, vaginal bleeding, or other conditions such as pre-eclampsia, embryonic abortion, or spontaneous miscarriage, the pregnancy can continue. After pregnancy, women should pay attention to increasing nutrition, living a regular life, eating a reasonable and diversified diet to ensure the nutrition of pregnant women and the needs of fetal growth and development.