Owing to rate of birth decrease and economic slump the preschool institution faces to solicit students more difficult and compete in preschool education market place more vigorous. At this time, some preschool education organizations use organizational learning to request members to make use of knowledge, look for linkage relation of a series of actions and final vision to. Results cause themselves to be able to stand on sustainable competitive advantage. About one preschool institution with conducting superior, the research use case study to explore establishment of enterprise development. and processes of organizational learning mechanism and promotion . Value of this paper lies in the synthesis of evidence from deep interviews and document analysis that organizational learning mechanism can offer resource-based competitive ability and assist preschool institution to gain position development.