The rickets we commonly talk about is nutritional Vitamin D deficiency rickets, which is due to a deficiency of Vitamin D in the body leading to a disorder of calcium and phosphorus metabolism. This results in a systemic nutritional disease characterized by skeletal lesions. If rickets is caused by insufficient intake, it can be self-healing and is a self-limiting disease. Once infants and young children spend enough time outdoors and receive physiological doses of Vitamin D treatment, rickets can be treated. However, treatment becomes significantly challenging in cases of congenital developmental abnormalities causing skeletal lesions, or any genetic diseases that lead to Vitamin D absorption disorders. Such cases often result in severe complications, including prominent kidney dysfunction leading to further disturbances in calcium and phosphorus metabolism, as well as liver function abnormalities causing Vitamin D synthesis disorders. Therefore, it is important to understand the specific causes of Vitamin D deficiency in children, and if the deficiency is due to common reasons that can be promptly controlled, then supplementation with Vitamin D and trace elements like calcium can effectively treat the condition.