(1.Department of Physical Education,Mudanjiang Teachers College,Mudanjiang 157012,China;2.School of Postgraduate,Beijing Sport University,Beijing 100084,China) Abstract: From such 3 perspectives as the social structural root, social mental mechanism and philosophical root of competitive sport dissimilation, the authors analyzed the causes for competitive sport dissimilation, and put forward the following opinions: the essence of competitive sports dissimilation is the social value order corresponding to sport professionals competing for medals; the purpose of competitive sport dissimilation is to put oneself at a high position in the social value order, and to have mental advantages in the social structure characterized with discrimi-natory comparison, thus to prove one’s own existence value; the social mental mechanism of competitive sport dis-similation is to turn the need of sport professionals for mental advantages into the need for medal possession by utilizing mental competition between sport professionals under the background of social value ordering; the phi-losophical root of competitive sport dissimilation lies with the existence dilemmas of sport professionals character-ized with the self-awareness and object awareness splitting of people. Key words: competitive sport dissimilation;value order;discriminatory comparison;mental competition |