A foam insulation ceramic made of waste from coal mine was prepared by using coal gangue and shale as the main raw material, talc as fluxing agent, and polishing slag as pore forming agent. The effects of different heating rates on the bulk density, water absorption, porosity, compressive strength, microporous morphology and isothermal adsorption/desorption performance of foamed ceramics were studied. The results show that the number of interconnected open porosity in the ceramic foam is reduced while the heating rate increases. The water absorption and the equilibrium moisture of absorption/desorption process are both small while the compressive strength is high. When the heating rate is 10℃/min, the bulk density of the ceramic foam is less than 07g/cm3, the porosity is greater than 70%, the water absorption is only 002%, and the compressive strength can reach 12MPa; When the relative humidity of environment is 973%, the equilibrium moisture content is less than 00031kg/kg. It is helpful to reduce the risk of mould growth which is caused by the wet environment, reduce building energy consumption and create a healthy indoor air environment.