Newborn baby to the full moon, is a growth spurt, growth is very rapid, often this month between the weight can be increased by about 1-1.5kg (that is, 2-3 kg). And the first three months of weight gain can be twice the value of the number of birth, that is, if the weight at birth is 3kg, full three months of weight can generally reach about 6kg. It is recommended to take vitamin D (also known as Icocin) regularly from two weeks after birth, which can effectively help the child to promote calcium absorption. Sunbathe regularly, while protecting the eyes, sunbathe about 1-2 times a day for 15-20 minutes each time. The baby is 5-6 months old and gradually consider adding complementary foods to ensure adequate nutrition supply.