According to our company's construction experience, we think it is best to use wet paving method, that is, fine stone concrete napping method. The reasons are as follows: The main function of geothermal leveling layer is to cover geothermal pipeline and conduct heat. Dry paving macadam is simple and material-saving, but there is a gap between the pipeline and the stone, which affects the heat conduction and reduces the thickness of the concrete layer. The foundation strength is poor, which is prone to cracks and even unevenness. In severe cases, it will affect the pavement of the floor. Fine stone concrete napping method has high strength, strong pipe holding ability and high heat conduction efficiency, which is recommended.