For pediatric synovitis with effusion caused by a cold, treatment should include invigorate blood circulation and eliminate blood stasis (TCM) herbal medicine, combined with acupuncture, massage, and heat therapy. Pay attention to adequate rest and nutritional supplementation, and consume sufficient vitamins and trace elements. In daily care, it is recommended to eat more vegetables and fruits, as well as foods rich in calcium, to avoid or reduce similar occurrences.