A total of 413 soil samples and crops thereupon were collected from fields under four typical types of land use, i.e. vegetable field, paddy field, dry land and orchards, for analysis to explore characteristics of As accumulation in the soils and crops in the four different types of fields and its risk to human health. Results show that in the paddy soil arsenic concentration was in the range of 5.69～148.5 mg kg^-1, indicating the soil was the highest in As accumulation degree, whereas, in the orchards soil, it was in the range of 3.29～24.7 mg kg^-1, indicating the soil was the lowest in As accumulation degree. However, soil As variation coefficients in all the soils were beyond 0.5, being moderate in variability, regardless land use type Soil arsenic concentrations varied sharply between sampling sites. As concentrations in crops also varied greatly as affected by land use. On average, it reached as high as 2.15 mg kg^-1 in oil crops, and was the lowest, being 0.032 mg kg^-1 in both dry land crops and fruits. Cluster analysis of the crop arsenic enrichment coefficients show that the crops in the study area could be divided into four groups. Oil crops were in Group I, the highest in crop arsenic enrichment coefficient, rice in Group II, leaf vegetables in Group III and fruits, gourd, bean and root vegetables, and grain crops in Group IV, being the lowest in crop arsenic enrichment coefficient. Based on JECFA-recommended ADI value and dietary structure of the residents in the study area, hazard quotients of soil arsenic to human health were analyzed, showing an order of paddy > vegetable field > dry land > orchard. Health risk posed by As in paddy soil was quite great, as the diet of rice led to ADI of As as high as to 0.0043 mg body^-1 day^-1 and the people living in the study area were faced with high health risk. Active measures should be taken to readjust the cropping structure in the study area and to manage and remedy As-polluted soils.