The normal average weight gain of pregnant women is around 12kg, but it also depends on the weight of pregnant women before pregnancy. The standard weight is the height minus 105, if the pregnant woman is thin before pregnancy, less than 10% of the standard weight, the pregnancy can grow to 14-15kg, at most do not exceed 15kg. if the pregnant woman’s weight before pregnancy is higher than the standard weight, more than 20%, the pregnancy should be less long, 7-8kg can be. So the weight is not necessarily how much to grow, 12kg is also the average level, if the pregnant woman original body type is fat, pregnancy body weight to grow less, long 7-8kg can be. 12kg points in early pregnancy to grow 2kg, middle pregnancy and late pregnancy each grow 5kg can be, control at this level can be.