| The knowledge and technology of R&D is the key factor for economic growth. R&D spillovers are close related to technical innovation , diffusion , and transformation, and bring about extra surplus of social recourses, rapidly upgrade technology available either. The form and effectiveness deeply concerns many researches at home and abroad.In recent years,researches explained and demonstrate the mechanism of emergency of spillovers and their tendency in different ways.In this paper,the concept of spillovers is discussed. Theories and methods of spillovers are also summarized systematically, and then come up with relative models about effect of R&D spillovers on basis of the above.Experiential analyzed Hebei industries R&D spillovers by using some statistical software. The main parts are as follows:(1)The concepts of R&D and spillovers were scrupulously discussed and the measurement of spillovers was carefully examined simultaneously.(2)Established the R&D Spillovers Model based on Input-output Theory,then calculate the value of spillovers effect of accepters and senders of42 industries of Hebei province from 1999 to 2000, assort the relationship of spillovers among the key accepters and senders.(3) Building a Data Enveloped Analysis Model to calculate the valueθof input-output activities of 42 industries, and appraised the validity of the above industries.( 4) Co-integration and Granger consequence analysis were made to examine.relationship between R&D input and economic growth from 1990 to 2005.The Error Correction Model was also built to indicates the dynamic equilibrium correlation between R&D input and economic growth.We employed metriceconomic model and C-D model to analyze the R&D contribution of private sector,university sector,scientific research organization sector and other sectors to the Total Factor Productivity respectively,and the degree that they have been made to economic development and TFP growth.Finally,the conclusion about the relationships between spillovers and total output,spillovers and economics, the advantage and disadvantage of leading industries'R&D activities were drawn according to previous parts . The countermeasures were brought forward as well to support the government decision-making.
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