Most of the thousands of Buddhist sutra found in Dunhuang's Grottoes of Buddhist Texts and Turpan in Xinjiang were from the hands of sutra copiers from 4th to 11th century. Seeing from the scriptures with notes, we know that the writers could be devided into three kinds: monks and nuns, believers and professional sutra copiers. This thesis underlines the relationship between the Buddhist believers and copying sutra, analyzes the aim of the believers in different times with different identity, and points out that because of the differences in the copiers' identities and places, the calligraphies they used look different.
