Energy-saving glass

The invention provides energy-saving glass. The energy-saving glass comprises a substrate, and a first ZnS layer, a first Ag layer, a second ZnS layer, a second Ag layer and a third ZnS layer which are arranged on the substrate, the thickness of the first ZnS layer ranges from 32 nm to 40 nm, the thickness of the first Ag layer ranges from 24 nm to 28 nm, the thickness of the second ZnS layer ranges from 63 nm to 71 nm, the thickness of the second Ag layer ranges from 18 nm to 22 nm, and the thickness of the third ZnS layer ranges from 30 nm to 38 nm. According to the energy-saving glass, the thin film with the specific thickness is adopted, the requirements of high sunlight ultraviolet reflectivity, high visible light transmittance, high sunlight infrared reflectivity and low infrared emissivity can be met at the same time, the visible light transmittance is considered, meanwhile, good cooling in summer and daytime and warm keeping in winter and at night can be achieved, and the energy-saving effect is achie