According to the competitive assets and competitive process in the international competitiveness equation, the present study used the improved AHP-TOPSIS evaluation method in connection with PCA to establish competitiveness indexes for regional construction industry. The evaluation system includes 32 specific indexes in 8aspects. Based on the related data of 2017, the study studied the competitiveness of 4 small-sized cities around Beijing and Tianjin to evaluate their construction industry, and offered sug...