Encyclopedical knowledge is needed to perfect theory based on consilience for social science as well as natural science since social phenomenon is more complex and changeable than natural phenomenon and more complex complication of interest is involved to adjust social system. Just as no social problem is isolated without other relationship, and it is necessary to maximize the scope of knowledge including cross-discipline knowledge in order to understand the real social phenomenon. Unfortunately, the gap between economics and other social sciences is enlarging since the independent economics school and the establishment of economics degree. As a result, not only do economics student seldom learn the knowledge from other disciplines, but also the closed system of economics based on complex mathematical model obstructs disciplines. Moreover, under the influence of “dividing”, such a serious misapprehension is in vogue in academic circle: specialist is profound while generalist is superficial. In fact, it is not what we have obtained but whether we have mastered and made development to justify the knowledge is profound or superficial.