Abstract:Based on the empirical data of 116 beef cattle family farmers in Inner Mongolia Autonomous Region and the SFA Model,this paper measured the technical efficiency and stability of different scale farmers in breeding and fattening. The results show that there are technical losses in breeding stage and fattening stage,and the scale family farm has a significant advantage in the fattening stage,while the small scale farm has the advantage in the calf breeding stage and stability of the technical efficiency. The technological efficiency of technology demonstration households is significantly higher than that of nondemonstration households. The development of beef cattle industry depends on the cows breeding in small scale,fattening specialization and regional production,and increasing the inventory of basic breeding cows through the sharing of added value in the industry chain by backyard and small scale farm,strengthening the technology extension to promote the reproduction efficiency,scale benefits in fattening and improving the competiveness of China’s beef cattle industry.