Children fall for no reason may be physiological reaction, malnutrition, rickets and other causes. 1. Physiological reaction: if the child is relatively small, bones, muscles and nerves are immature and weak, while the cerebral cortex is poorly coordinated, it will lead to children’s fall for no reason, which is a normal phenomenon. 2. malnutrition: due to dietary protein, energy and other nutrients long-term insufficient intake, malabsorption or increased consumption, can lead to physical growth and development and dysfunction, fat loss, growth retardation and other symptoms, which leads to small children fall for no reason. 3. Rickets: the disease is mainly caused by rapid growth and development, disease, drugs, vitamin D deficiency and other factors, so that small children fall for no reason. Children fall for no reason may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.