With the continuous development of sports, gymnasium design now becomes the focus of design. In order to optimize gymnasium design, the design form should be innovated based on current design stance, so as to design new gymnasium consistent with current development trend. To construct ecology-based gymnasium, the optimized analysis on construction mode should be made in strict accordance with ecology and sports knowledge and in combination with the design concept and development orientation of gymnasium, according to, so as to make sports buildings sustainable. This paper, with the focus of study on relevant ecological theory, is to make detailed analysis on the optimization of gymnasium design.