The invention provides a glass coating structure, a fingerprint detection device and a mobile terminal. The glass coating structure comprises a glass substrate, the lower surface of the glass substrate is downwards provided with titanium-nitrogen oxide coating layers and silicon-nitrogen oxide coating layers, and the titanium-nitrogen oxide coating layers and silicon-nitrogen oxide coating layers are alternately stacked. In the molecular formula of titanium-nitrogen oxide and the molecular formula of silicon-nitrogen oxide, the ratio of nitrogen to oxygen ranges from 0.8:1 to 1:1. The titanium-nitrogen oxide coating layers and the silicon-nitrogen oxide coating layers are alternately arranged on the lower surface of the glass substrate, the ratio of nitrogen to oxygen in coating compounds is kept from 0.8:1 to 1:1, and accordingly on the premise that insulation performance is guaranteed, the glass coating structure in a silver color and with a mirror surface effect is obtained; besides, influences of the thickness of a coating on fingerprint detection are controlled in a very small range.