It is vital to solution of water resource's crises to effectively utilize surface runoff.Based on data of land use,soil and rainfall,runoff in hilly regions of Sichuan basin at a local scale was calculated and analyzed as a sample of Bashan town in Zhong County.The results showed that: firstly,the spatial distribution of runoff was highly related with land use type and agro-type on the surface,and amount of runoff on water area or un-utilized land was larger than those on paddy field and dry land with crop growing.Secondly,runoff was mainly distributed in April to October,being more than 90% of the annual total runoff,and the annual change of runoff was similar to rainfall.Thirdly,the runoff was unevenly distributed with high and low flow year by turns and its small value of Cv.The SCS model was a simple and practical runoff computation method with a few parameters,in which the relationship among soil characteristics,land use status,and runoff was substantially considered.And the data of local runoff have been become more simple and visual by using the GIS software.Therefore,runoff space-time change on each catchment analyzed by using the GIS could provide an effective methods and adequate references for the allocation to agricultural water at a local scale.