(Department of Physical Education,School of Education,Sun Yat-Sen University,Guangzhou 510275,China) Abstract: According to mechanism design theory, in the construction of a teenager fitness improvement assurance system, the dealing of horizontal relationships needs to coordinate national, social, collective and individual inter-ests, and to establish and complete a multi-layered rational interest expression mechanism, interest coordination mechanism, interest compensation mechanism as well as supervising and constraint mechanism; the dealing of ver-tical relationships between governments at all levels needs to follow the incentive compatible constraint principle, to establish an effective incentive mechanism and supervision responsibility mechanism, to standardize the behaviors of related departments in terms of intrinsic impetus and extrinsic constraint and pressure, and to provide an effective and sustainable system assurance for improving teenager fitness. Key words: school physical education;mechanism design theory;teenager fitness |