This paper reported one of Chinas new recorded species (Didymodon validus Limpr.) in Didymodon. The moss was distributed in Europe and Central Asia. The characteristics of the D. validus Limpr.: it is twisted or incurved when dry; leaf is longer; Costa wide at leaf apex, longexcurrent; Leaf cells smooth and without warts. In this paper, the taxonomic features, habitat, geographical distribution and characteristic comparison of related species are described. Meanwhile, ink drawing of the new recorded species was made.