Abstract：Based on relevant data in Henan input-output Chart in 2007, the following conclusions were made: firstly, the modern service industry in Henan is heavily dependent on the second industry, but lack direct economic relationship with the first industry, and the indirect economic relationship is limited;secondly, the medium input ratio and medium demand ratio of most inner departments in Henan modern service industry is less than 50 percent, which imply that those departments are weakly dependant on upstream industry, and the offered products were mainly used in final demand;thirdly, the influence coefficient of Henan modern service industry is higher than sensitivity coefficient, which implies the push effect on national economy is higher than drag effect, thus the development of Henan modern service industry needs to adopt active mode.

Keyword：modern service industry;industrial relationship;industrial spread;input and output;