Abstract: Based on the land supply competition and cooperation relationships between developed and developing counties, a evolutionary game model is established; According to this model and lots of research on different typical cases,the directions and tendencies of convergence of evolutionary stable strategy are finally analyzed; The results prove that, whether the county governments will take the strategy of mutual cooperation in land supply policy, is largely depended on the inspection from the superior governments, value-added benefits from the local industry and the costs of infrastructure construction.

Key words: county economy, land-supplied, competition and cooperation relationship, evolutionary game, evolutionary stable strategy