关键词: 保障性住房, 租购同权, 社会身份, 最后通牒博弈, 实地实验

Abstract: In 2020，the Central Economic Work Conference pointed out that we should pay attention to the construction of indemnificatory housingAt the same time，it clearly pointed out that renting and purchase should gradually have the same right to enjoy public servicesThe longterm inequality right between tenants and buyers makes people view different between renting houses and buying houses in psychological cognition，which may further lead to difference in social identity between these two groupsTherefore，it is of great significance to explore whether the difference of tenants identity and buyers identity will affect people's sense of fairness in daily communication，which can improve peoples living conditions and promote the common prosperity，with avoiding social segmentation between tenants and buyersIn order to control the interference of other factors，this paper uses the method of field experiment with affordable housing and public rental housing households as subjects，taking the disclosure of tenants identity and buyers identity information as the intervention and introducing the tenants identity and buyers identity exogenous into the ultimatum game for the purpose of investigating whether tenants identity and buyers identity affect fairness between the two groupsThe results show that disclosing tenants identity and buyers identity will awaken the selfawareness of tenantsThe longterm inequality of tenants'and buyers' right makes tenants eager for a more equitable allocation of resourcesAt the same time，disclosing tenants identity and buyers identity will also change people's cognition of othersCompared with facing property buyers，people will put forward a more equitable distribution plan when facing tenants

Key words: indemnificatory housing, equal right between buyers and tenants, social identity, ultimatum game, field experiment  ,