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This paper does the transverse and longitudinal comparative analysis about the level, the struc ture and the influence of R&D industry among China, United States, Japan, Germany and Kor ea using the method of input and output. We found that the proportion of China's service industry and R&D industry are lower than America, Japan, Germany, Korea and other developed countries .The proportion of input on R&D industry is small, and the influence coefficient, the induction degree coefficient is also lower than other developed countries. This paper focus on the situation of R&D industry in China, analyzes the gap of R&D industry between at home and abroad and put forward suggestions for improvement.

The Structure, Level and Influence of China's R & D Industry---- Comparison between Domestic and Foreign Based on Input Output Method