The Chinese species of the genus Coccobius Ratzeburg (Hymenoptera: Aphelinidae) are reviewed. Sixteen species, C.abdominis Huang, C.annulicornis Ratzeburg, C.azumai Tachikawa, C.chaoi Huang, C.curtifuniculatus Huang, C.flaviceps (Girault & Dodd), C.flavicornis Compere & Annecke, C.fulvus (Compere & Annecke), C.furviflagellatus Huang, C.furvus Huang, C.languidus Huang, C.longialatus Huang, C.longifuniculatus Huang, C.maculatus Huang, C.wuyiensis Huang, and one new species, Coccobius albiscutellum Wang and Huang sp.nov., are treated. A key is provided for the recognition of the females of all Chinese species of Coccobius, and notes are given on their use in biological control of scale insect pests.