The Paleogene strata in Hebei Plain mainly consist of Dongying Group, Shahejie Group and Kongdian Group, which are lithologically marl, mudstone, calcareous mudstone, gypsum mudstone and sandstone. There are many physical and mechanical factors that affect the core drilling rate. The study shows that the rock density and compressive strength increase with the formation depth. The rock density of the first to the third member of Dongying Group and Shahejie Group is significantly lower than that of the fourth member of Shahejie Group and Kongdian Group. The higher content of clay minerals in the mudstone section of the Paleogene strata results in greater elasticity and plasticity of the rock, which has a significant influence on the drilling rate. In this paper, the drillability of the Paleogene strata and the reasonable matching bit types are presented for core drilling.