The invention discloses a one-component end silane polyacrylate binder and a preparation method thereof, wherein the binder consists of the following components in parts by weight: 100-200 parts of end silane polyacrylate, 30-80 parts of plasticizer, 150-300 parts of incremental filler, 10-100 parts of colorant, 1-25 parts of thixotropic agent, 0.5-15 parts of moisture scavenger, 0.5-25 parts of binding accelerant and 0.5-15 parts of catalyst. As the UV (ultraviolet)-resistance is better and the binding property can be greatly improved, the binder can satisfy the binding requirements of different materials and can be widely applied to the automobile manufacturing industry, the transportation industry, the container manufacturing, the metal and nonmetal processing industry, the equipment manufacturing, the air conditioners and ventilation devices.