【摘要】合作社作为合作经济的具体实现形式和组织载体，在与各种组织形式的竞争中彰显出顽强的生命力并发展壮大。农民合作社的产生和发展不但有利于提高农民的交易谈判地位，增加农民收入，而且在推动农业产业化、农业市场化方面发挥了巨大的作用。随着市场经济的快速发展，农业市场的竞争日益激烈，农民合作社面临来自其他农业经济组织形式带来的竞争压力。农民合作社采取怎样的发展模式来适应现代农业环境的变化，从而提高竞争力并扩大生存空间是值得关注和思考的问题。

　　市场结构的类型对市场主体的行为和绩效产生影响，农民合作社作为农业市场上连接农民和市场的组织，其行为本身是一种市场行为，所以也必然受到市场结构的影响。

　　本文通过SCP理论以及分析我国农业市场化的三个阶段进程与我国农民合作社发展的三个阶段在时间上的对应关系建立了合作社发展模式与市场结构不同类型的对应模型；再对我国农业市场结构进行分析，得出垄断竞争市场结构是我国农业市场结构的演变趋势；利用模型得知我国农民合作社发展模式应该选择与之相应的新一代合作社模式；通过分析借鉴北美新一代合作社产生和发展的成功经验，对我国农民合作社的发展提出了几点建议。

　　【Abstract】Cooperatives as cooperative economy's realization forms and organization carrier ,reveal a tenacious vitality and developing with all sorts of organizations competition. The farmer cooperatives not only benefit to the improvement of farmers' trade negotiating position and increases farmers' income,but also playing a huge role in promoting the industrialization of agriculture and agricultural marketization . With the rapid development of market economy, the competition in agricultural market increasingly fierce, the farmer cooperatives faces the pressure of competition from other agricultural economic organization forms. It is worth to pay attention and thinking about the problem of which development model of farmer cooperatives should be taken to adapt to the modern agricultural environment ，and how can highlight the strong competitiveness of coopratives and to expand it's living space.

　　Market structure types impacts market conduct and market performance(SCP), Farmer cooperatives as a concatenation of the farmers and the market in the agricultural market, it is a kind of market behavior,so it will inevitably suffered by the effect of market structure.

　　In this paper,it use SCP theory to describes the type of market structure and famer's cooperatives development model has a relationship.Then established a model for the relationship between different type of market structure and famer's cooperatives development model through analyse the fact of the three stages of Chinese agricultural market structure changes during the agriculture marketization process and the three periods of the fanner's cooperative's development. In terms of the market structure theory , the growing trend of Chinese agricultural market is monopolistic competition market structaire;According the model establised above, we should take the new generation of cooperative mode to adapt to that market structure.Finally, puts forward several suggestions to the development of Chinese farmers' cooperatives by analyzing the successful experience of the North America New Generation Cooperatives.

　　【关键字】农业市场化；市场结构；合作社发展模式；新一代合作社

　　【Key words 】agriculture marketization；market structure；the cooperative development modenew generation cooperatives