Rickets is primarily caused by a deficiency in vitamin D, leading to disturbances in calcium and phosphorus metabolism in the body, which results in abnormal skeletal development—a type of systemic nutritional disease. The most common form is nutritional rickets due to a deficiency in nutrients and vitamin D. Treatment focuses on controlling the active phase to prevent relapse of deformities. Therefore, early detection and comprehensive treatment are crucial. The primary treatment method involves supplementing with vitamin D. The choice of vitamin D, the dosage, and the length of treatment generally need to be tailored to the specific circumstances of the child. Additionally, increased exposure to sunlight and appropriate outdoor activities should be encouraged to enhance the absorption of vitamin D. Children should also be supplemented with calcium and a variety of vitamins. Follow-ups during the recovery phase are necessary, and training in sitting, standing, and walking should not be started too early to avoid deformities in the lower limbs. Furthermore, no medication is needed during the residual stage of the disease. For mild to moderate cases, physical exercise should be intensified, and skeletal deformities can be corrected using active or passive exercises. Severe skeletal deformities may require surgical correction.