A baby around 3 months old suddenly does not like to take milk, but can drink some water, why is this? First of all, problems such as fever, diarrhea, vomiting or bad spirits should be ruled out. If the baby does not have these problems, the cause may be physiologic anorexia. Physiological anorexia period is mainly seen due to the baby 3 to 4 months old. A physiological anorexia may be the cause of 1, too much milk: less than 3 months of the baby can not fully absorb the protein in the milk, even if the milk to eat more, will not cause too much protein absorption, will not aggravate the burden on the liver and kidneys. But 3 months after the baby, from the milk to absorb protein ability to enhance, which will increase the workload of the liver and kidneys, long time will cause “fatigue”, manifested as a decrease in appetite, do not like to eat milk; 2, eating milk inattentive: the baby 3 ~ 4 months old, the neck muscles of the increased mobility, coupled with the baby is very curious about the external environment, so, a small change in the surroundings, the baby is very curious about the environment. Therefore, there is a little change around, will divert his attention, so that he no longer concentrate on milk. After 3 months of age, most babies will no longer take milk in one go, but will eat and stop eating, and sometimes they will even make noise. Some inquisitive babies even stop suckling when there are noises or people moving around. This is only a temporary decrease in milk supply, which usually recovers naturally after a month or so. For this kind of babies, you can dilute the milk or feed the baby when the baby seems to be sleeping. The baby is temporarily less milk, as long as you drink enough water, usually not a problem. Ten days later, when the liver and kidneys get enough rest, function recovery, the baby will like to eat milk again. 2, to create an ideal eating environment: the most basic is to observe the baby in what circumstances eating the most ideal, and then go to create a most appropriate eating environment. Most babies are more likely to concentrate on eating milk in a quiet place where they will not be disturbed. 3, parents must maintain a relaxed and happy mood: because the baby will be sensitive to the feeder’s tense emotions, and this will affect his appetite. 4, timely give baby love and encouragement, so that the baby will have a good mood to eat. 5, try to complementary foods: 4 to 6 months old baby has been able to contact with complementary foods, mothers can add the right amount of paving the way to help the baby supplemental nutrition, and through this to train him to eat the ability to complementary foods.