With the growing population of migrant workers, their social integration has attracted increasing scholarly attention. Previous studies have demonstrated that negative social evaluations affect the mental health of migrant workers. However, few scholars have studied the influence of online media coverage and comments on attitude change towards migrant workers. Therefore, in order to clarify the mechanism of the influence of online media coverage on attitude change towards migrant workers, study was conducted to explore the two on the social judgement, behavior tendence towards migrant workers and the perceived

of social norms by experimentally manipulating the valence (positive/negative) of online media coverage and comments among 172 non-migrant relatives. The results showed that under the condition of positive reporting, participants who read positive comments had a better impression of migrant workers than those who read negative comments. However, participants who read negative comments rated the group less positively and were less likely to engage in positive group behavior towards the target group than those who read positive comments; Under the condition of negative reporting, positive comments inhibited the participants' negative evaluation of the target group; Under the condition of positive reporting, subjects who read positive comments believed that many people were willing to accept migrant workers. The results indicated that online coverage and comments jointly influence changes in group attitudes, with online comments consistent with the online coverage valence reinforcing group attitudes, while online comments inconsistent with the online news valence triggering shifts in group attitudes. This study enrich the theory of group perception and media coverage, and have practical significance in improving group relationship.

online coverage, online comments, consistent of valence, migrant workers, group attitude