The invention relates to the field of multifunctional thin-body thermal insulation materials, and specifically provides a multifunctional thin-body thermal insulation material, which includes: 10-20 parts by mass of diatomite, 3-8 parts by mass of nano-zirconia, 2-20 parts by mass 10 parts by mass of glass beads, 2-5 parts by mass of airgel, 5-15 parts by mass of aggregate, 20-40 parts by mass of thickening and water-retaining agent, 3-5 parts by mass of reinforcing fiber, 1-4 parts by mass of nano-platinum Powder, 1-3 parts by mass of conductive micropowder, 20-30 parts by mass of white cement, 10-15 parts by mass of rubber powder, 10-15 parts by mass of PVB adhesive, and 0.5-3 parts by mass of dispersant. The multifunctional thin-body thermal insulation material has the functions of thermal insulation, purifying indoor air, adjusting air humidity, absorbing electromagnetic radiation, repairing small cracks on the wall, etc., and forms a firm attachment with the base surface, which is easy to paint and convenient to construct. .