The invention discloses a multifunctional inner wall paint. The multifunctional inner wall paint comprises raw materials: modified acrylic resin emulsion, pure acrylic emulsion, light calcium carbonate, diatomite, lithopone, ultrafine talcum powder, water absorption composite materials, negative ion-anti-microbial additives, hydroxyethyl cellulose, a dispersant SN-5040, a wetting agent AP-680, 2,2,4-Trimethyl-1,3-pentanediol monoisobutyrate, propylene glycol monomethyl ether, an antifoaming agent TSP-01, sodium hexametaphosphate, a leveling agent L-150, a stain-resistant agent JZM-1, glycol, a multifunctional auxiliary agent AMP-95, mildew inhibitors and deionized water. The multifunctional inner wall paint has good scrubbing resistance, rheological property and brushing performance, can absorb harmful components in air indoors, adsorbs moisture, releases moisture, refreshes air, releases negative ions and is environmentally friendly and is helpful for health.