The purpose of this study is to analyze the scientific thoughts and achievement of Ting Wen-Chiang regarding his scientific epistemology and practices during science modernization project, who claimed the universal application of scientific methods as the leading role of scientific wave in the Science versus Metaphysics in the 1920s’ China. In the 1910s and 1930s, Ting Wen-Chiang tried to solve these time-related problems ahead of time through spreading of scientific thought and practicing science business. During this period, he played an important role in the process of Chinese modernization of science by taking practical efforts as a practical scientist and academic administrator. He argued for the universality of scientific knowledge with the theoretical basis of scientific perception as the 'Skeptical idealism' as a leader of the Chinese scientific profession. He emphasized that people must acquire 'evidence' to clearly understand the object of 'suspicion', and to do so, expand the horizon of empirical science in order to face reality. In addition, by expanding learning knowledge based on accurate concepts and rational reasoning, he stressed minimizing 'psychological ambiguity', such as metaphor and speculation caused by the psychological phenomenon of 'idealism'. In this way, he insisted common sense and rational judgment possible, and emphasized that scientific knowledge was at the basis of such judgments. Likewise, his thought of 'skeptical idealism' was the theoretical basis of practical science and provided the spiritual power of Chinese science modernization project. The existing 'scientism' evaluation of his scientific thoughts can be confirmed as a result of misreading his universal application of scientific method as 'scientific versatility'. The limit of this precedent study was caused by confusing Ting Wen-Chiang 's scientific thought with the 'scientific socialism' of excessive ideological tendency, considering Ting Wen-Chiang 's scientific thought as 'scientism'. In addition, criticizing it as scientism in the view of humanistic anti-scientificism is clearly the limit of the study view that lacks the specific age recognition of China at that time. In other words, it was the result of 'type criticism' that was introduced by the West who did not face the reality of China at that time. His role as a practical scientist in the process of Chinese modernization of science can be confirmed through his concrete business activities, which he showed in "Geology" and "National Center for Scientific Research" under the banner of "National Science and Technology". He first reorganized the nominal geology department of Beijing University into a modern geology department and established a geological research institute to train specialists for on-site geological survey. Furthermore he made efforts to improve the operation by drafting various "outline", "clause" and "advertisement" required for the institute. He also has brought the capacity of the Institute of Geology to the international level through the reorganization and establishment of the institutes, efficient arrangement of the organization personnel, issuance of domestic scholarly publications, international academic exchanges and library construction. In this way, he not only established the foundations of geological education, research and investigation, but also actively participated in geological exploration work on the site. Through this, the national distribution of mineral resources was grasped and the exact amount of reserves was measured, laying the foundation of Chinese science modernization project. On the other hand, he innovated the aspect of modern national academic research institute by renovating the organization and operation as the secretary of "National Central Research Institute". He has improved the efficiency of his work by efficiently managing the organization, personnel, and finances of the Institute. Besides, he has made it equipped with an autonomous operating system by blocking external power intervention and internal authoritarian domination. Moreover, through the establishment of 'National Academic Council', he has implemented a permanent 'consultation decision' system in the institute, thereby improving the organic relation of national academic research organizations and formulating the method of democratic operation of the institute. Ting Wen-Chiang expanded his scientific thought from the academic field to the practice field of the national society by recognizing the time mission to realize the application of scientific thought with the dream of 'Scientific Salvation'. He led the establishment and development of modern geological science base in China, institutional innovation of academic research institutes, and endeavored to develop the social economy ever since lagging behind and backward science and technology. Ting Wen-Chiang does not regard science as an empty idea, but always associates it with a real situation. In particular, he emphasized observing, measuring and experimenting various natural environments using scientific methods, which are the daily tasks of the Institute. It was because the various statistical data from here was a valuable foundation for the development of the technology industry. On the other hand, he proposed national research into the development of natural resources and innovation of production technologies using scientific methods. In addition, Ting Wen-Chiang founded science organization and science association so as to foster scientific and technological talents as well as conducted field research for the past several years. Thus it is apparent to see his spirit while devoting in science projects with his these endeavors in order to save the country as a pragmatic scientist. In this sense, it seems that the specific scientific projects that Jungmun Kang conducted during the process of science modernization were effective. Then, how should the status of the scientific wave led by Jungmun Kang be established in relation to the identification of the contemporary Chinese Scientism? Considering the era when 'Saving the Nation' was overwhelmed by 'Enlightenment' at that time due to the antipathy of the pendants sticking to tradition and the ideological criticism from the historical materialist(scientific socialism), the position of the wave (scientific pragmatism) needs to be restored. Since then, the fundamental transformation of the national system (the formation of a socialism system) has been made possible by the more powerful ideological forces (the historical materialism). If so, is rational criticism(school of science) that pursuing progressive improvement a defeated of history? Since then, the excessive ideology for 'saving the nation' has resulted in a rigid national system (the Cultural Revolution) and this has led to the weakening of the national competitiveness. In this aspect, the role of rational criticism which has pursued the 'pragmatism', excluding both extremists, is enough worth to be reappraised despite its limitations.