The performance of baby formula not absorbed is very much, the most intuitive is the baby formula eaten formula not absorbed, weight does not increase, height does not grow. The child’s weight is lower than the normal average weight of children of the same age, which is the most intuitive performance. There are other manifestations of formula intolerance, including vomiting, changes in stool characteristics, including the possibility of mucus and blood in the stool, and even an increase in the number of stools. Another thing that is easily overlooked is that the child may be intolerant to food and may have nighttime bouts of crying, or nocturnal crying. This condition may also be caused by food allergies or food intolerances, and should be taken seriously clinically, including in daily life. In this case, including the process of adding complementary foods, patients may experience intolerance to complementary foods, including vomiting, weight gain, changes in stool characteristics, increased nighttime crying, and even rashes and allergies, which may be due to intolerance or non-adaptation. The order, timing, frequency and amount of complementary foods should be adjusted appropriately, and food may be added later. You may even have to go to the hospital to add food a little later, not even in too much quantity, and for a relatively long duration, perhaps more than two weeks. If you have been intolerant, you should also go to the hospital for allergen testing to observe whether you are allergic to food, and then add supplementary foods reasonably under the guidance of a clinical specialist.