The invention relates to a modified diatom-ooze interior decorative material which is prepared from the following components in percentage by weight: 30-32% of modified kieselguhr, 22-24% of coarse whiting, 5-8% of calcium hydroxide powder, 4-6% of wood fiber, 3-4% of rubber powder, 1-2% of humectant, 22-23% of meerschaum wool and 8-10% of talcum powder. The production technique comprises the following steps: naturally drying and weathering kieselguhr raw ores, detecting the adobe, grading, and transporting to a processing workshop; pulverizing, carrying out air separation, adding a cosolvent, calcining in a high-temperature calcining kiln to remove water and organic impurities, pulverizing, grading repeatedly, carrying out air separation to remove inorganic impurities, and proportionally mixing with calcium hydroxide, coarse whiting, natural rubber and the like. Compared with the existing diatom-ooze product, the modified diatom-ooze interior decorative material provided by the invention has superstrong adsorption capacity, can not shed powder or fade, can be scrubbed with a wet rag, has the advantages of long service life (more than 20 years), no edge tilting, no shedding, no fading and oxidation resistance, and always looks new.