The utility model relates to a high-performance electromagnetic shielding keyboard and relates to the technical field of electromagnetic shielding or electromagnetic protection. A keyboard panel is arranged at the top of a box cover (7) of a shielding box. The middle of the box cover is provided with a plurality of waveguide holes (1) with each corresponding to a connecting rod below each key on the keyboard panel. A waveguide tube (8) is arranged on the lower surface of each waveguide hole. A keyboard (2) is disposed at the bottom of a body (4) of the shielding box. Keys of the keyboard are in one-to-one correspondence to the keys of the keyboard panel (5). The connecting rods below the keys of the keyboard panel sequentially penetrate through the waveguide holes and the waveguide tubes to be respectively communicated with the keys on the keyboard so as to form an electromagnetic shielding keyboard. The high-performance electromagnetic shielding keyboard has the advantages of high shielding performance, simplicity in operation and maintenance, high environmental adaptability, safety and reliability in operation, scientific and reasonable structural design and the like, and has promising application prospect.