In order to improve the current situation of curtain wall glass through complex surface treatment process to reduce the light transmittance and light pollution of glass, and at the same time make it have excellent self-cleaning and anti-fog performance. In this paper, tannic acid (TA), carbon nanotubes (CNTs), dendritic nano-SiO2, ethyl orthosilicate (TEOS) and other basic raw materials were used to spray the solution onto the blank glass substrate through a low-cost spraying process. After curing at room temperature, TA-CNTs / SiO2 coated glass with self-cleaning and anti-fogging was obtained, which can be applied to glass curtain walls. The carbon nanotubes before and after modification were analyzed by Fourier transform infrared (FT-IR) and thermogravimetry (TG). The morphology of the samples was characterized by scanning electron microscope (SEM) and water contact angle (WCA). The effect of TEOS hydrolysate content on the contact angle and the effect of modified carbon nanotube content on the transmittance of the coating were investigated. Finally, the samples were tested for anti-fog, self-cleaning and wear resistance.The results show that when the TEOS hydrolysate is 6 g and the TA-CNTs is 0.16 g, the coating has super-hydrophilic effect ( CA, 2.5 ° ), and has excellent self-cleaning and anti-fogging effects. The addition of carbon nanotubes makes the surface of the coating more rough, which is conducive to reducing light reflection and reducing light pollution. When the content of TA-CNTs in the coating reached 0.002 g / cm2, the transmittance of the coating decreased to 60 %. At this time, the coating can maintain a certain transparency while having privacy. After 120 friction experiments, it still maintains superhydrophilicity and has good wear resistance.