It is possible that babies with delayed overall development may have a poorer IQ, but the specifics vary from person to person. It is possible that babies with delayed overall development are just physically shorter and have shorter limbs, but it is possible that their intellectual development is normal. However, if the overall development is delayed, including intellectual backwardness, it will have a direct impact on the baby’s intelligence, resulting in the baby’s intelligence in the process of development is gradually low, lower than normal children. The baby’s overall development is delayed, should be timely to the hospital, to identify the causes of delayed development, in order to target treatment, if it is caused by disease, need to treat the disease, if it is caused by nutritional deficiencies, the diet must increase nutrition.