Common symptoms of overnutrition in children are as follows: 1, excess protein: often lead to dry stools aggravate the burden on the kidneys and liver, leading to energy crisis of brain cells, brain function and vascular endothelial cell damage, causing calcium loss, easy to osteoporosis, so that the body of excessive purine accumulation caused by gouty arthritis; 2, excess fat: often lead to indigestion, diarrhea, lack of appetite, obesity. Will promote the absorption of lead, increase blood cholesterol content, easy to cause atherosclerosis, will cause hyperlipidemia, coronary heart disease, will form fatty liver, is to lead to malignant tumors risk factors; 3, excess carbohydrates: often lead to dental caries, muscle flaccidity, lack of appetite, malnutrition, aggravation of diabetes mellitus, and to promote the development of coronary heart disease and so on; 4, vitamin A excess: often due to excessive Supplementation of vitamin A thus triggering children dizziness, headache, vomiting, hair thinning, irritability, itchy skin, dry lips, such as vitamin A intake of severe overdose caused by poisoning, can lead to respiratory paralysis or even death; 5, excess calcium: often due to excessive calcium supplementation thus increasing the risk of kidney stones, inhibit iron absorption, impede the absorption of phosphorus, reduce the bioavailability of zinc, leading to premature closure of fontanel, limiting brain development, premature healing of epiphysis affecting growth and development, skin roughness, calcification premature aging, etc.; 6, sodium excess: thirst, irritability, trance, impaired renal function, aggravate or produce hypertension, aggravate and produce edema, increase the burden on the heart, and increase the risk of gastric cancer. 7, phosphorus, fluorine, vitamin D, vitamin B6, vitamin E and other nutrients in excess, will lead to the appearance of the corresponding symptoms of nutritional oversupply.