The author considers that the current report and approach to the knowledge-based economy are a little bit confused. The reason is to lump together the theories of knowledge-based economy with different system. The difference of theoretical system of knowledge-based economy lies in the view angle of its research. This paper gives a deepening theoretical approach to the knowledge-based economy from the angle of economics, innovative economics,information economics and sociology.%本文认为当前对知识经济的报道与探讨较为混乱，其原因在于将不同体系的知识经济理论混为一谈。知识经济理论体系的不同在于对它研究的视角不同。本文将分别从经济学、创新经济学、信息经济学和社会学的角度对知识经济予以深入的理论探讨。
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