The purpose of the present study is to understand how social comparison motivates employees’ unethical pro-organizational behavior(UPB). Social comparison is reflected in different aspects, specifically, the desire for status is an indicator of individual comparison preference; the relative leader-member exchange(RLMX) is social comparison information; the leader-member exchange(LMX) differentiation is a context for social comparison. Through a two-stage survey of 407 employees from 91 teams, the present study found that the RLMX, desire for status, and LMX differentiation promoted UPB. The desire for status and LMX differentiation positively moderated the relationship between RLMX and UPB.