Abstract: The academic career of the great Chinese writer, Guo Moruo, is full of incertitudes, which, in fact, are the expressions of his personality and scholar mentality. This feature makes it hard for some researchers to master his academic spirit. Based on in-depth and comprehensive analyses of the writer and his comprehensiveness, this paper exerts itself to ease the skepticism and help master his greatness, concluding that his skepticism and scholar mentality much consists with those of the Shu Studies.