Abstract: The rate of our country’s agricultural science and technology achievement transformation and transaction was in long-term low status. The main reasons are as follows, firstly, the information asymmetry of the achievement transformation is serious; secondly, the mechanism of achievement transformation is imperfect; thirdly, the support system of the achievement transformation is unsound. Therefore, we put forward an idea of constructing "the national agricultural science and technology achievement transformation and transaction service platform". The platform consists of resources collection and exhibition services, policy support services, science and technology achievement transaction evaluation services, science and technology achievement transaction services, cooperation services of industry, education and academy, small and medium-sized test services, science and technology investment and financing services, management of science and technology achievements etc 8 sub-service platforms, and its nature is public service system which provides policies, technologies, talents, capitals and a series of supports and help for both parties who participated in the agriculture science and technology achievements transformation and transaction and the third party who provided services. We recommended the introduction of 4 measures including organization, mechanism, policy and talent for the smoothly construction and operation of the platform.