The county-level landuse data base of Shaanxi Province is established by pre-treat ing CBERS—2 images, setting up interpretation indexes and classifying landuse and so on. Accordingly , the environmental quality indexis calculated in terms of the evaluating standards of environmental quality, and the integrated evaluation of ecological environmental quality for Shaanxi Province in 2004 is eventually completed. The evaluat ing result shows that the quality in the north area is on average; in the Yulin area, poor; in the central and south area, good; and in the Qinling area, excellent. Comparing the result with the integrated evaluating result in 2000 indicates that the overall environmental quality of Shaanxi is improved, and the environment of the cent ral area is boosted distinctly while few individual areas continue to deteriorate.