Liu, Yong was a famous courtier and calligrapher in the Qing Dynasty. He learned calligraphy from Dong, Qi-chang and Chao, Meng-fu in his earlier years, and later he profited by the masters of Wei Dynasty and Jin Dynasty. He absorbed the advantages of steles, copybooks, and every school, and then he created the style of his own. He was the best among the Four Great Calligraphers of Qing Dynasty. Except for calligraphy, Liu often wrote poems and postscripts, in which he expressed ideas about calligraphy he gained from the experience. Although Liu’s ideas about calligraphy were not collected in the form of a book, they were valued. The poems such as “The Thirty Poems about Learning Calligraphy” represent Liu’s moral ideas of literary and art criticism; the postscripts of writing “Copybooks of Chunhua Pavilion” show his strict attitude about distinguishing copybooks. Liu’s skill of calligraphy and poetry advanced at the same time, and sometimes we could know Liu’s cultivation of calligraphy in his poems. In conclusion, Liu’s important achievement of calligraphy contains his particular style of writing, viewpoints of art, strict attitude about distinguishing copybooks, and cultivation of calligraphy in his poems.