Corner activities have various forms and rich contents, which have far-reaching significance for children’s education and development. The creation of corner environment directly affects the quality and effect of corner activities. In this paper, a case study of a large class in Y kindergarten of a municipal kindergarten is carried out. The results show that the corner space layout of the large class in Y kindergarten is scientific and reasonable, the concept is clear, the types are diverse, and the materials are abundant to meet the needs of children’s activities. There are also some problems, such as the single concept of teachers, the lack of innovation, the long working intensity, the difficulty of concentrating energy, the lag of teaching and research in the corner of the kindergarten, and so on. Some countermeasures and suggestions are put forward from the aspects of the professional growth of teachers and the optimization of the management of kindergartens.