If a newborn baby grows only one pound in the full month, this is less than the normal weight gain. The average child often grows around 800g in the first month. If the child only grows 500g, it is relatively low. However, each child is different and it is not possible to generalize. If the baby was born prematurely or was born with a low birth weight, he or she may have a low milk intake. Although only one kilogram, but the mental state is relatively good, good milk, and other conditions are also good. This is normal, so parents should not worry too much. If the child full moon only grew a pound, need to determine other conditions. If there is crying, abdominal pain, or even blood in the stool, consider whether there is a pathological factor, for example, some children are allergic to milk protein. It is necessary to change the child in time to a deeply hydrolyzed protein milk powder or amino acid milk powder, so as to be able to gain weight quickly.