The invention discloses a wall fireproof insulating material, comprising, by weight, 40-60 parts of cement, 30-40 parts of closed-cell expanded perlite, 20-30 parts of vitrified glass beads, 10-30 parts of glass fiber, 10-20 parts of sepiolite powder, 5-15 parts of a fiber, 15-25 parts of a silicate, 5-10 parts of mica powder, 2-8 parts of lightweight ceramsite, 5-15 parts of quartz sand, 3-8 parts of magnesium oxide, 5-15 parts of asbestos, 4-10 parts of heavy calcium carbonate, 3-10 parts of latex powder, 2-6 parts of a flame retardant, 1-5 parts of a mildew preventive, 3-8 parts of a foaming agent, and 60-80 parts of deionized water. The wall fireproof insulating material has simple formulation and is convenient to prepare, and has good fireproof and insulating properties.