A dust-proof keyboard includes a keyboard main body and a plurality of keyboard keys (4) buckled on the keyboard main body. The keyboard keys (4) include key caps (41) and contact blocks (42) connected with one side of the key caps (41). The keyboard main body includes a silicone layer (3), a binding layer (5), a circuit board (7) and elastic sheets (8) corresponding to the keyboard keys (4). The elastic sheets (8) are located between the binding layer (5) and the circuit board (7), and the silicone layer (3) is located between the binding layer (5) and the keyboard keys (4). The silicone layer (3) is provided with a plurality of dust-proof rings (31) corresponding to the elastic sheets (8). The dust-proof rings (31) are hollow cylinders, at least one end of which is open, and the open ends are rightly placed opposite to the contact blocks (42). The dust-proof rings (31) do not influence a normal contact between the contact blocks (42) and the circuit board (7) while separating the working surfaces (D) of the contact blocks (42) from the environment, thereby playing a dust-proof and water-proof role, and enabling the operation of the keys of the dust-proof keyboard to be normal.