The invention discloses a transparent glass thermal insulating coating which comprises the following components in parts by weight: 30-50 parts of crylic acid modified organic silicon resin, 15-20 parts of low viscosity high chlorinated polyethylene resin, 5-10 parts of nanometer titania, 2-3 parts of nano-zinc oxide, 20-30 parts of n-butyl acetate, 2-5 parts of n-butyl alcohol and 2-5 parts of cyclohexanone. The coating disclosed by the invention is relatively high in shielding rate in an infrared area, good in transmissivity in a visible light area, and remarkable in absorption effect in an ultraviolet area, the transmissivity of visible light is greater than 80%, the shielding rate of infrared light is greater than or equal to 61%, the energy-saving effect is remarkable, the temperature can be reduced by 5-10 DEG C, and the energy can be saved by 20-30%. The coating is good in adhesion to surfaces of glass products, has a self-cleaning function, is free of charge, water or dust on the surface, and can be applied to coating on surfaces such as door and window glass, automobile glass and glass curtain walls of high-rise buildings.