Through the innovative application of data mining technology into the research of historical literature, the two old documents, i.e. both the publicity outline of the general line, and the “first five-year” plan have released new historical values. Marked as Mao Zedongs innovation of the important literature on Chinas industrialization theory and policy, they have made nine pioneering contributions, which are still of enlightenments and guiding significances. This case shows that data mining technology, applied in the study of historical literature, can realize both method innovation and knowledge innovation.