A normal seven-month-old baby is about 35cm in length, 25cm at the top and hip, and weighs about 1,000g. Seven months pregnant baby gestational age has 28 weeks, fetal body length of about 35cm, top hip length of 25cm, weighing about 1000g. subcutaneous fat is not much, the skin is pink, the surface is covered with fetal fat, the pupil membrane disappears, the eyes are half-open, the limbs are good, there is respiratory movement, the birth can be survived, but easy to suffer from idiopathic respiratory distress syndrome. In the seventh month of pregnancy, the growth and development of the fetus into a rapid period, need a lot of nutrients to meet their own development needs, pregnant women are prone to calcium deficiency, anemia and other symptoms, should strengthen the calcium, iron supplements, and dietary diversity.