A normal newborn, especially a full-term newborn, can gain 1-1.5kg per month on average in the first 3 months after birth, most often around 1kg, so if it can reach this standard, it means the newborn is gaining weight well. So the weight of the newborn can increase by a total of 4 kg in the first two months after birth, plus the birth weight, which is the weight of the newborn in the first two months after birth. If the newborn’s weight is weighed every day, it should increase by about 12-15 g/kg/d. According to this growth rate, it can reach the standard of about two pounds per month. Therefore, the weight gain of newborns is faster in the first 3 months after birth, and after 3 months, the average weight gain is about 0.5 kg per month.