The purpose of this study is to investigate the relationship between perceived organizational vision and attitude toward organizational change also verify the mediating role of organizational trust those of variables. the organizational vision is divided into vision salience and vision shardeness. attitude toward organizational change is consist of cognitive and behavioral component. We formulated direct effect hypothesis and mediating effect hypothesis. to test hypotheses, survey method are performed. total 253 questionnaires are used for analysis. the results are as follows. first, organizational vision salience have positive impact on attitude toward organizational change. however, organizational vision shardeness have not significant impact on attitude toward organizational change. second, organizational trust have positive impact on attitude toward organizational change. third, organizational trust have partially mediating role of relationship between organizational vision shardeness and attitude toward organizational change.Based on results, we conclude that a vision to be salient, employees feel that vision has been articulated, and will be likely more motivated to engage in activities based on organizational change that coincide with the visionary direction. it means that company emphasis on communicating and building consensus about the salient vision will be necessary to build up positive attitude toward organizational change. also, vision shardeness amplifies to enhance employees' good attitude of organizational change through organizational trust. if organization enhance effort of organizational vision shardeness, employees are implicitly acceptance of vision which having trustworthiness of organization. organization vision shardeness lead to organizational trust, that's why explain about organization should consider trust when formulate various organizational change practices.