Abstract: Based on the early oil/gas exploration work on Taiyuan Formation, Huainan coalfield, in conjunction with some significant physical discoveries(layers with oil/gas showing and site gas-content testing), we proposed the layout scheme of underground drilling and its well profile design in Shanxi Formation underlying strata. Additionally, the layout scheme of the ground test well and its well profile design aims to the oil/gas survey in Taiyuan Formation coal-bearing rock series located in the bottom wall system(in-situ system) subjected to Fufeng thrust and napped tectonic belt of Huainan coalfield. On the basis of that, it was first offered that the "underground borehole + ground test well" combined technology can be used to explore the unconventional oil/gas resources in Taiyuan Formation, Huainan coalfield.