This paper analyzed the change of water use structure, included industrial, agricultural, domestic and ecological water consumption from 2001to 2010in Shaanxi Province. Information entropy was introduced to discuss the trend of water use structure evolvement. Furthermore, the major driving forces of the change were analyzed. Results manifested that water consumption slowly grew in the last 10years, with an annual increase of 61million m3, the proportion of agriculture water use gradually decreased, industrial water consumption changed slowly, and the proportion of domestic and ecological water use obviously increased.