The development of any theory should not be confined into a kind of exclusive way based on monism, but should hold the pluralism belief advocating the competition among kinds of theories. Otherwise, it will fall into the plight of myth. Clearly, so is it for the economics. The rational development path of economic theory lies in the consilience of knowledge and thinking on the basis of the competition and comparison between different schools and disciplines. However, The research of modern mainstream economics takes on a strong tendency of monism, which makes it try to maintain a specific research paradigm and degenerate into a " autistic” interpretation community, as well create a obvious mainstream paradigm fetishism. The tendency of monism is especially obvious in the academic of economics in China. The reason lies in the fact that the utilitarian style of study is more prevalent and the pragmatism system of academic is more distorted in China. In view of this, it is urgent for modern mainstream economics to take a turn in academic attitude: breakthrough the plight of myth resulting from monism by importing the open and pluralistic thinking. Accordingly, it should focus on such two aspects: one is to pay attention to non-professionals’ challenges and criticism from the external power, the other is to cultivate the academic spirit based on critical thinking from the internal power.