The Chinese species of the genus Trichrysis Lichtenstein, 1876 are revised for the first time. Thirteen species are recorded, of which three species are new for science, T. coeruleamaculata Rosa, Wei & Xu, sp. n., T. tridensnotata Rosa, Wei & Xu, sp. n., and T. yuani Rosa, Feng & Xu, sp. n.. Two species are revalidated: T. tonkinensis (Mocsáry, 1914) and T. formosana (Mocsáry, 1912). Two new synonymies are proposed, T. formosana (Mocsáry, 1912)=T. sauteri (Mocsáry, 1912), syn. n.=T. taial (Tsuneki, 1970), syn. n.. The lectotype of Chrysis pellucida du Buysson, 1887 is designated.