Abstract: The reconstruction and expansion of Wangwa coal mine is to expand to 6.0Mt/a on the basis of the original 1.50Mt/a design production capacity. The reconstruction and expansion follows the principle of people-oriented, simplicity and efficiency. By simplifying the ground layout, optimizing the development layout, underground parking lot deployment, mining area roadway layout and mechanical equipment, optimizing the underground streamline design and other measures, the goal of simplicity and efficiency of the mine system has been achieved, with less investment and short construction period. It has laid a good foundation for the intelligent construction of the mine and the construction of green mine. The design and construction of the project have positive reference significance for similar reconstruction and expansion mines.