From the imperial ages on, China had been developing a legal system of herself. After the victory in the 1911 Revolution (Xinhai Revolution), the old empire was toppled and a new republic set up. It was the first time China made up her mind to fetch a democratic constitution. When the revolutionist forces seized Nanking, they established a new government based on "the Organizational Law of the Provisional Government". As this fundamental law was too simple and crude for further applications, it had then been revised and reformed into "the Draft of the Provisional Constitution of the Great ROC" firstly, and to "the Provisional Constitution of the Republic of China" further. After that, the governmental system had been improved and the articles about civil rights completed. But, as the full legal revision or a constitutional reception was unprecedented, it had brought about numerous complicated problems. By probing original text, the middle draft and the related resolutions in the constitution-making procedure, this paper purported to study the new legal terms and translational problems during the founding period of the ROC.