Abstract: At present, the farmland moderate-scaled management has become a hot problem in the study on improving the efficiency of farmland use. In order to improve the efficiency of the land and accelerate the land circulation in northwest area, this thesis took the Beiyuan District of Linxia County and adopted the labor limit analysis method and the direct evaluation method to confirm the farmland moderate-scaled management. The results showed that, the limit of farmland moderate- scaled management in Beiyuan District was 0.14 hm² through the labor limit analysis method. Meanwhile, according to the direct evaluation method the labor moderate-scaled management was 0.25 hm² and the family moderate scale was 0.66 hm² in Beiyuan District. The results indicated that it only needed 30436 people to involve in agricultural work, so there were 33879 people as the surplus labor in the situation of land moderate-scaled management in Beiyuan District. Finally it brings forward the solution of surplus labor force for the development of land moderate-scaled management in Beiyuan District.