The paper deals with a species new to science, Stygothrombium garzensis Li & Guo, sp. nov., collected from Qinghai-Tibet Plateau, P.R. China, which represents a newly recorded superfamily Stygothrombioidea Mullen & Vercammen-Grandjean, 1980 to Chinese fauna. The new species is described and illustrated in detail, especially the quantity and characteristic of idiosomal glandularia, with the diagnosis of infracapitulum base approximately 3.5 times as long as rostrum, the second pair of posterior setae on prodorsal plate about half length of posterior portion of prodorsal plate and the second ventroglandularia between the third acetabula and inner posterior angle of the fourth coxae, located at one-third of interval near the third acetabula approximately.