Abstract: Before the foundation of People's Republic of China, the study on “Two Cuan”, two types of an unique calligraphy in Yunnan Province, mainly focused on the origin of “Two Cuan”, their calligraphic features in Jin and Song dynasties, their variant forms and other issues of their study. All the research made in these fields becomes great achievements of “Two Cuan” calligraphy study.

Key words: before the foundation of PRC, origin of “Two Cuan", calligraphy, features of “Two Cuan” calligraphy