The invention discloses an inner wall coating and a production method. The inner wall coating comprises raw materials, namely polyurethane, an emulsion, silk powder, a hemp fiber, a composite couplingagent, sepiolite, water, titanium dioxide, white carbon black, a leveling agent and a defoaming agent. The inner wall coating disclosed by the invention is capable of adsorbing formaldehyde and volatile organic compounds in the air, preventing radiation, preventing inflaming and purifying the air. The inner wall coating is excellent in hardness, smoothness, water resistance and cracking resistance, good in stability and high in hardness, the mechanical properties of the coating are improved, human bodies and the environment are prevented from adverse influence as the raw materials are non-toxic and harmless, formaldehyde is eliminated, the air is purified, the humidity is adjusted, negative oxygen ions are released, fire and inflaming are retarded, a wall surface can be cleaned by self, the adhesion property and the friction resistance of the coating are improved, the density and the strength of the coating are improved, and the coating is prevented from powdering, cracking or peelingafter being used. The inner wall coating is environmental-friendly and pollution-free, low in cost and wide in application range, the inner wall coating is convenient to use, rapid in drying speed, high in construction efficiency and smooth and glory in appearance.