Three-year-old baby height of 85 centimeters is mostly considered abnormal, suggesting that the baby may be lagging behind in growth and development, which may be related to malnutrition, rickets and other causes. Normal three-year-old baby’s average height should be around 96 centimeters, if the three-year-old baby height of 85 centimeters is on the short side. But height is affected by heredity, if the parents are shorter, the baby’s stature may also be shorter than the same age, if there is no other abnormal performance is considered normal. If it is due to malnutrition, rickets and other causes of growth and development backwardness, is an abnormal situation, it is recommended that timely consultation and treatment. 1. Malnutrition: children do not like to eat or partial food resulting in long-term malnutrition, which leads to insufficient energy and protein intake, resulting in delayed growth and development of children, resulting in children shorter than their peers. 2. rickets: rickets is a kind of dwarfism, rickets will lead to the child’s long bone development disorders, bone growth restriction leads to the child’s height is shorter than the same age. Therefore, three-year-old baby height 85 cm should go to the hospital in a timely manner, improve the examination, clear cause and then give targeted treatment.