The present invention relates to a nanometer ceramic solar film. According to the nanometer ceramic solar film, a firs layer titanium dioxide film, a second layer titanium nitride film and a third titanium dioxide film are sequentially plated on a surface of a substrate PET through magnetron sputtering, wherein a thickness of the substrate PET is 23-50 mum, a thickness of the first layer titanium dioxide film is 26-38 nm, a thickness of the second layer titanium nitride film is 20-26 nm, and a thickness of the third layer titanium dioxide film is 26-38 nm. The nanometer ceramic solar film of the present invention has the following characteristics that: good spectral selective permeability, high transmittance in a visible light region, and high reflectivity in an infrared region are provided, wherein infrared rays are blocked so as to reduce heat source, such that thermal insulation is achieved while transmittance on visible light is not affected; and titanium dioxide and titanium nitride have high chemical stability at a room temperature, are not easily oxidized, and do not react with oxygen, water, steam, hydrochloric acid, sulfuric acid and the like under normal circumstances, such that performances are stable, fading and discoloration can not be generated, and a service life is long.