Social mindfulness is an important prosocial behavior，which conceptualized in terms of other-regarding choices involving both skill（to see it）and will（to do it）to act mindfully toward another person’s control over outcomes. Based on the differential mode of association in the context of China，this research focused on how the sense of hierarchy affected the extent of social mindfulness，and whether generation difference could affect the relationship between the sense of hierarchy and social mindfulness. This research further explored the relationship between social mindfulness and moral judgement and tried to find out whether the sense of hierarchy affected the relationship between social mindfulness and moral judgement. The results suggested that social mindfulness was affected by the sense of hierarchy，and it showed an ingroup favorite effect. The extent of social mindfulness was correlated with moral judgement in certain condition. The discussion analyzed how cultural norm affected the social mindfulness，and the difference between social mindfulness and moral judgement.