Juvenile idiopathic arthritis is suitable for low-intensity aerobic exercise, such as swimming, bicycling, and walking, which should be chosen according to the patient’s specific condition. Juvenile idiopathic arthritis is usually an unexplained, persistent inflammation of the joints, related to genetics, infections, immunodeficiency diseases, and can manifest joint pain, limited mobility, and may cause growth retardation. It should be detected as early as possible, and the symptoms should be controlled in a timely manner. Low-intensity aerobic exercises, such as swimming, cycling, and walking, are suitable to strengthen the function of the joints. Patients with juvenile idiopathic arthritis should consult a doctor for examination, actively cooperate with the doctor for treatment and rehabilitation training, and undergo regular review and appropriate exercise, but pay attention to the intensity of exercise to avoid causing joint damage.