Abstract:In order to understand the foreign scientific and technological service of agricultural research institutions subordinate to the ministry of each provinces,and make rational use of agricultural scientific and technological resources,this paper construction of agricultural foreign scientific and technological service efficiency evaluation index system. super efficiency and Malmquist index methods were used to measure the external scientific and technological service efficiency of agricultural scientific research institutions from 2011 to 2016..the results show that: first, there are significant differences in the foreign scientific and technological service efficiency of agricultural scientific and technological research institutions among the subordinate departments of various provinces.second,in term of total factor productivity,the subordinate industries of all provinces showed a declining trend of 11%.23%,23%,which was mainly caused by the decline of technological progress,while the 11%increase of total factor productivity of all provinces was mainly caused by the improvement of technological efficiency.third,from 2011 to 2016,the efficiency of china’s foreign scientific and technological service has shown periodic changes,.there is a serious imbalance in the foreign scientific and technological service provided by agricultural research institutions in various provinces.