Abstract: According to the informationization characters of different industry in China,the construction principle about appraising indicator system of industrial informationization level was presented, and the indicator system was set up too. The comparative analysis to different industries has been finished with the principle component analysis(PLA). The results show that there exit more difference among the informationization level of 37 industries in China, The overall informationization level of mining industry except petroleum and gas extracting industry is medium or low grade, and this should be paid attention by related departments.