PROBLEM TO BE SOLVED: To provide an ecological preparation for adsorption or blocking of harmful substances, having excellent adsorptive deodorizing properties and manufacturing method thereof.SOLUTION: The preparation for blocking harmful substances includes zeolite, bentonite, active carbon, graphite, electrolytic reduction water, anion water, natural fragrance emitting material, an antimicrobial agent, ethyl alcohol, hydrogen peroxide, and sodium chloride.