Abstract: A new diatom species, Actinella miocenica is erected and described in this paper. The species was collected from diatomiferous sediment cropping out at Qui Ligou, Deng Hua County, Jiling Province, China. It is characetrized by valve clavate, with ends of obtuse rounded and acute rounded.Frustule in girdle view cuneate, without the intercalary band and short septa. The specimens of this pater were examined using a Scanning Electron Microscopy, each end of valve in inner valve view, with a 1abiate process.Them found are important on the Taxonomy of Actinella genus. The new fossil diatom recorded from miocene continental strata. The research on new species plags an important significancei in stratigraphic subdivisionand correlation.