The basal weight of each pregnant woman is different, and a weight gain of about 5kg in six and a half months of pregnancy is more appropriate. During pregnancy, a woman will gradually gain weight due to the continuous growth of the fetus and placental tissues, as well as the accumulation of the woman’s own fat. Generally speaking, six months of pregnancy belongs to the middle stage of pregnancy, and it is normal to gain about 5kg more than when you are not pregnant. However, the weight gain of pregnant women is very much related to their own body weight and the presence of underlying diseases. If a pregnant woman is obese or has diseases such as diabetes, she should pay attention to weight control, and it is not recommended to gain too much weight during pregnancy, or else a huge baby may appear, increasing the risk of delivery.