The invention relates to the technical field of network hardware, and discloses a dustproof keyboard. The dustproof keyboard comprises keys and a keyboard body. A contraction mechanism, an air bag anda spring are arranged under each key. One end of each spring is fixed to the corresponding air bag, and the other end of each spring is fixed to the keyboard body. The air bags can expand to seal thegap between two keys. Each contraction mechanism includes an air tank which is provided with an air chamber and a piston plate in the air chamber. Each piston plate divides the corresponding air chamber into an upper chamber and a lower chamber, and is connected in a sliding manner with the corresponding air tank. Each upper chamber is communicated with the corresponding air bag. Each lower chamber is provided with a first one-way valve. The keyboard body is provided with a dust removal mechanism. The dust removal mechanism includes a dust removal box which is connected in a sliding manner with the keyboard body. The dust removal box is provided with a dust removal chamber and a second one-way valve fixed to the dust removal chamber. The dust removal chamber is provided with an overflow valve and an electromagnetic valve. Both the overflow valve and the electromagnetic valve are fixed to the dust removal box. The second one-way valve is communicated with the dust removal chamber and the lower chambers. The dustproof keyboard has a simple structure, and can be easily protected from dust and easily de-dusted.