|（Department of Physical Education，Zhejiang Educational Institute，Hangzhou 310012，China）
Abstract: Sports ecology is a new discipline under establishment. The motives for establishing sports ecology as a new discipline are formed under the action of its extrinsic and intrinsic powers. The extrinsic power mainly refers to the need of the time, the call of the ecological movement, and the promotion of the development of modern ecology; the intrinsic power mainly refers to the intense role awareness of establishing a new discipline, the guidance of the tendency of sports researches focusing more and more on ecological issues, and the progress made by scientific re-searchers in their active exploration. The purpose of probing into the motives is to provide a theoretical criterion for the establishing of sports ecology as a new discipline.
Key words: sports ecology；sports environment；sports discipline