Abstract: Based on the Porter's "the diamond model" and the theory of industry stages competence, the paper constructs the competitiveness evaluation index system of China's equipment manufacturing industry. Combined with the relevant data of 30 provinces and cities in 2005,2009 and 2014, it uses principal component analysis and multiple regression to the positive research on the competitiveness of China's equipment manufacturing industry.The paper points out that China's equipment manufacturing industry is still in the stage of the accumulation of growing up, it means primary factors of production in scale expansion, advanced factors of production continue to accumulateand. The lack of advanced factors of production and the weakness of capacity for independent innovation are the main factor which hinder its improvement.We should pay attention to speed up the development advanced equipment manufacturing industry, accelerate the transformation of development pattern,increase the inputs of high-level factors of production.

Key words: equipment manufacturing industry, stage competitive, principal component analysis, multiple regression