The paper is the research on variants in the block-printed literature written in Chinese character during the Chinese domination, related the recognition and definition of variants, the analysis of character variants, i v vi g h g s i th st k s, mp ts, wh h t s’ dditi d subtraction, summarizes the variation characteristics and explores the character relationship between Vietnam and China. the statistics of the number of characters and their variants in order to seek the character variants frequency in the block-printed literature written in Chinese character during the Chinese domination in Vietnam history.