Abstract: With the help of Geographic Information System (GIS), overlaying analysis of the 1:50000 current land- use map, soil map and administrative map, forming 737 patches, which were used as the basic management and evaluation cells. This research selected fourteen influencing factors from five aspects such as site conditions, section properties, obstacle factors, soil conditions, soil management, and the evaluation system and model of farmland fertility was built up. The results showed that, 3543.18 hm² cultivated land could be divided into seven grades, the grade one was 355.24 hm², the grade two was 533.64 hm², the grade three was 575.72 hm², the grade four was 738.09 hm², the grade five was 503.53 hm², the grade six was 445.06 hm², the grade seven was 391.90 hm², the fertility of grade one to seven account for 10.03%, 16.25%, 16.25%, 20.83%, 14.21%, 12.26%, 11.06%, respectively.