Metal floor has strong heat transfer capacity and fast heat absorption rate, which can reduce high room temperature. A shaped phase change material with a phase change temperature of about 20℃ was selected, and metal was used as the support and packaging material. The shaped phase change material particles were added to the cement mortar to make a mixed material, and then injected into the elevated metal movable floor. This not only significantly increases the thermal density of the floor, but also the cement mortar will enhance the thermal conductivity of the phase change material, making its heat release process more efficient and enabling the floor to maintain a high strength. The thermal capacity of the mixed material can be adjusted by changing the mixing ratio. The phase change latent heat of the shaped phase change material in this floor is 8090kJ/kg, and its mass content in the floor is 40%. The second and third floors of the ultra-low energy consumption demonstration building all use energy-saving elevated movable floors containing shaped phase change materials. The phase change energy floor can reduce the high temperature during the day and increase the room temperature at night, which can save energy in winter.