The invention relates to a plaster capable of replacing soapy water and treating dirt stained on a furniture surface and a preparation method of the plaster. The plaster is prepared from the following components in parts by weight: 10-15 parts of gas phase method white carbon black, 15-20 parts of 20 percent of sodium carbonate aqueous solution, 10-20 parts of calcium hydroxide, 7-10 parts of starch, 1-3 parts of borax, 1-2 parts of a water-resisting agent, 1-2 parts of dimethyl silicone rubber, 0.1-1 part of an acid oxidant, 1-3 parts of organic acid, 1-4 parts of sodium hydroxide, 25-40 parts of water-soluble polyurethane, 106-125 parts of sludge, 3-6 parts of ammonium persulfate, 3-6 parts of propylene epoxide, 3-6 parts of octadecyl dihydroxyethyl betaine, 0.3-0.6 part of an SX-1 pickling inhibitor, 5-10 parts of peracetic acid, 10-20 parts of hydrochloric acid with a concentration of 33-36 percent, 1-2 parts of sodium chloride, 10-15 parts of a diluting agent, 10-15 parts of a bleaching agent and 20-23 parts of a freshener. The plaster is utilized for rolling on the furniture surface, so that on one hand, the dirt on the furniture surface and dirt concealed at a pothole can be quickly absorbed, and on the other hand, the plaster cannot leave any impurity and can clean through one-time rolling, so as not to hurt hands and damage the furniture surface.