The invention discloses a corn maze and a design method thereof. The corn maze is realized in such a way that a China map is used, corns are planted in areas in various provinces; maze roads are generated at the boundaries of the provinces; small-size mazes such as vegetables and flowers are arranged in the provincial boundary roads with greater areas. The design method of the corn maze comprises three steps of determining the boundary positions of the maze, drawing the provincial boundaries and drawing lines among farmlands. According to the corn maze disclosed by the invention, the longest turning channel of the maze is determined according to physiological properties of man; meanwhile, large mazes are nested and combined with small mazes, so that the complexity of the maze is improved; the visual fatigue caused by a single plant is reduced at the same time. By adopting the China map for designing, original provincial boundary maze roads can be retained; by only changing crop contents in each provincial area in the next few years, the educational interestingness of the maze can be increased, the investment in changing the maze roads can be saved and economic benefits are increased.