The invention discloses a dustproof keyboard, which comprises a keyboard main body and a plurality of keyboard keys blocked on the keyboard main body, wherein each keyboard key comprises a keycap and a touch block connected with one side of the keycap; the keyboard main body comprises a silica gel layer, a binding layer, a circuit board and an elastic sheet corresponding to the keyboard key, and the elastic sheet is arranged between the binding layer and the circuit board; the silica gel layer is arranged between the binding layer and the keyboard key; the silica gel layer is provided with a plurality of dustproof rings corresponding to the elastic sheet; and the dustproof ring is a hollow cylinder with at least one open end which is over against the touch block. The dustproof ring does not influence the normal contact of the touch block and the circuit board while isolating the working surface of the touch block from the outside, and plays a role of preventing dust and water, thus thekeystroke operation of the dustproof keyboard is kept normal, and the service life of the keyboard is improved.