The invention discloses a special paint for internal walls, which is composed of the following components in parts by weight: 200-300 parts of water, 1-3 parts of alkaloid, 1-3 parts of wetting agent, 2-5 parts of dispersant, 2-4 parts of defoaming agent, 150-250 parts of titanium white, 50-100 parts of calcium carbonate powder, 50-100 parts of cattle bone meal, 150-250 parts of acrylic acid emulsion, 20-50 parts of vegetable jelly composition, 2-4 parts of ethanol and 3-5 parts of plant extract. The paint has the advantages of simple preparation technique and low cost, has favorable moldproof, insect expelling and sterilization effects by the combination of the cattle bone meal, plant extract and vegetable jelly, and smells fresh. The paint is free of formaldehyde, benzene, ammonia and other toxic substances, can achieve zero emission of volatile toxic substances, and can absorb formaldehyde and other harmful substances emitted by indoor floor, furniture and the like. The paint has favorable air permeability, enables the wall surface to have the function of ventilation, and automatically regulates the indoor air humidity.