Adults' O-legs must find corresponding methods according to their actual situation. For example, some adults have slight O-legs, and the distance between knees is about 3~5 cm. This kind of O-leg can wear a corrective belt when sleeping, or adjust its standing posture and center of gravity in daily standing posture, which can alleviate the O-leg to some extent, but the correction effect is not particularly good. If necessary, you can adjust the tightness of the correction belt according to your actual situation.