The fetus is about 30cm long and weighs about 600-700g in the 6th month of pregnancy. The fetus is in a period of rapid development and grows every day, so the pregnant woman’s belly is getting bigger day by day, and there is no clear standard because the pregnant woman’s belly varies when she is not pregnant. Depending on the size of the fetus in the uterus, if the fetus is small and thin, the pregnant woman’s belly may not be very big in the sixth month of pregnancy. If the fetus is large, or if there are twin or even multiple fetuses, the pregnant woman’s belly will be larger. Therefore, the size of the pregnant woman’s stomach in the 6th month of pregnancy should be judged according to the size of the pregnant woman and the size of the fetus growing in the womb. In addition, for the thinner pregnant women and not in good health, the pregnant belly in the 6th month of pregnancy may not be very big, while for some more obese pregnant women, the pregnant belly may look larger. Pregnant women should usually pay more attention to rest, do not move around, eat more protein-rich food, can supplement their own nutrition, but also to promote the growth and development of the fetus.