PROBLEM TO BE SOLVED: To provide a method for making dolomite porous enhancing adsorption performance by making porous with enhancing pore volume of dolomite without depending on difference of a composition due to production place of a dolomite ore which is a raw material and settings of burning conditions such as temperature, a manufacturing of a porous dolomite material, the porous dolomite material obtained by the manufacturing method and a utilization method of the porous dolomite material.SOLUTION: There is provided a method for making dolomite porous and high adsorption by burning so that the content of a retained CaMg(CO)phase in a dolomite burnt article analyzed using a Rietveld method by powder X-ray diffraction of the dolomite burnt article is 0.4≤x≤35.4 (mass%) and adjusting retained amount of the CaMg(CO)phase, and the porous dolomite material can be used for exhaust gas adsorption or virus inactivation.SELECTED DRAWING: None