Abstract: The third-party assessment of science and technology achievements refers to a kind of payment evaluating activities which are completed independently by some special social institutions with evaluation qualifications and ability, the level and value of the achievements are evaluated by the aspects of scientificalness, creativeness and industrialization prospect according to the relevant regulations, procedures and standards. At present, there are still some problems on the evaluation of the agricultural science and technology achievements in China, for example, achievements appraisal and the third-party assessment coexist, the evaluation which promote the trade and industry is less, the legal effect of the third-party assessment report is not clear, the classified index system is not perfect and the evaluation level of the expert need to improve. After 5 years pilot work of the third-party assessment by the ministry of science and technology, plenty of experience has accumulated, the policy environment in which constructing the third-party assessment system of agricultural science and technology achievements is maturing gradually, and we put forward following 5 suggestions about the industry management, classified evaluation, evaluation agency qualification, qualification admittance of the jobholder and social supervision mechanism on constructing the third-party assessment system of agricultural science and technology achievements in China.