Two new species of the genus Melixanthus Suffrian, 1854 are described from China: M. menglaensis Duan, Wang & Zhou, sp. nov. from Yunnan (also in Vietnam, Tonkin) and M. similibimaculicollis Duan, Wang & Zhou, sp. nov. from Yunnan. Another species, M. rufiventris Pic, 1926, is reported for the first time in China. High-quality color images and line drawings of adult habitus, aedeagus, and other important structures are provided for all three species. The types of the new species are deposited in the collection of Institute of Zoology, Chinese Academy of Sciences ( IZ-CAS).