China Cretaceous Continental Scientific Drilling (CCSD) in the Songliao Basin, called SK1 project, collected 558.94 m of Mingshui Formation which corresponded to the late Campanian to Danian. In this paper, the authors described in centimeter-scale the sedimentary sequence, lithology, lithofacies and cyclic stratigraphy at the drilling spot. Fifteen litho-types were recognized in the section. Researchers who are interested in the basin can do their reasonable analysis of the basin on the basis of the precise original materials in the paper.