Based on the related research, this study constructs the evaluation model and index system of tourism competitiveness of historical and cultural blocks from cultural strength, geographical strength and commercial strength. Furthermore, this paper makes a quantitative and transverse comparative research on Kaifeng Song Dynasty Imperial Street, Puyang Ancient Cross Street, Shenhou Old Town Street by using the combination of the Delphi Technique and the Analytic Hierarchy Process (AHP). Among them, the tourism competitiveness of the Puyang ancient street is the weakest one, combined with the weak points of the data benchmark layer and the advantages of the other two blocks, put forward the feasibility optimization proposals of business travel combination, cultural distinctiveness and quality creation respectively in order to provide a new shortcut for both of the research and understanding of the tourism competitiveness and development of historical and cultural blocks.