Objective To summarize evidence regarding physical activity among childern with juvenile idiopathic arthritis （JIA）, and to provide references for healthcare professionals. Methods The researchers asked a clinical question, searched for evidence related to physical activity in JIA children based on the 6S evidence pyramid, and then appraised the quality of the included literature, extracted and summarized the evidence. Results A total of 13 publications (1 best practice report, 3 guidelines and 9 systematic reviews), were included.A total of 16 pieces of best evidence on physical activity in JIA children were synthesized, including physical therapy, the timing, duration, intensity, types, frequency, and sites of physical activity, precautions for physical activity, and adherence management. Conclusion The summarized best evidence for managing physical activity among childern with JIA provides an evidence-based basis for healthcare professionals to guide children to engage in an appropriate amount of physical activity.