Anti-mildew putty powder and preparation method thereof

The invention discloses anti-mildew putty powder and a preparation method thereof, and relates to the technical field of decoration material preparation. Comprising the following components in parts by weight: 32.20 to 35.60 parts of high-alumina cement, 11.00 to 12.20 parts of white cement, 2.80 to 3.00 parts of kaolin, 0.35 to 0.45 part of a water reducing agent, 0.09 to 0.11 part of a defoaming agent, 0.09 to 0.11 part of tartaric acid, 0.19 to 0.21 part of hydroxypropyl methyl cellulose, 0.09 to 0.11 part of lithium carbonate, 35.00 to 38.60 parts of quartz sand, 4.20 to 4.60 parts of stone powder, 0.47 to 0.53 part of an organic silicon water repellent, 4.60 to 5.00 parts of latex powder, 2.80 to 3.00 parts of silica fume powder and 0.95 to 1.05 parts of an anti-mildew agent. By adding the anti-mildew agent, mildew breeding on the surface of the putty powder can be effectively prevented, so that the service life is prolonged; by adding the water reducing agent and the hydroxypropyl methyl cellulose, the