This paper first reveals horizontal distribution property of six forest fire index in western Hubei: (1) Forest Fire Danger (FFD) shows geographic differentiation and similarity. (2) FFD decreases from north to south. (3) Northwestern part of Hubei proviuce is the highest FFD district; (4)2/3 part of counties (cities) belongs to low FFD. Then it analyses the vertical structure of forest fire index, height from 1600 to 2000m has the highest fire index, and thd index decreases at either higher or lower height.The above characteristics can be reasonably explained by distribution of terrain and its microclimate.