A cooking appliance comprising: a main body having a cooking room; and a door arranged on the front of the main body to open and close the cooking room, wherein the door comprises: a door frame configured to have an opening formed to see into the cooking room and a conductive border portion around the opening; a shielding member arranged to cover the opening and having a conductive blocking layer configured to block electromagnetic waves; and a fixing member arranged to combine the door frame and the shielding member, wherein the shielding member is arranged such that the blocking layer joins the border portion of the door frame to be electrically connected, characterized in that, the fixing member includes a coupling portion formed in a figure corresponding to the border portion of the door frame and combined with the door frame, wherein the door frame includes a coupled portion arranged in the border portion and combined with the coupling portion of the fixing member, and either the coupling portion of the fixing member comprises a burring portion having a burring hole and a side wall surrounding the burring hole and extending to the shielding member perpendicularly to the fixing member, wherein the shielding member comprises a first through hole formed for the burring portion to pass through to be combined with the coupled portion of the door frame, and wherein the coupled portion of the door frame comprises a second through hole formed for the burring portion to pass through, or the coupling portion of the fixing member comprises a welding projection protruding to the shielding member perpendicularly to the fixing member to enable a welding position to be checked, and to be combined with the coupled portion of the door frame, wherein the shielding member comprises a first through hole formed for the welding projection to pass through to be combined with the coupled portion of the door frame, and wherein the coupled portion of the door frame comprises a conductive welded portion allowing the welding projection to be welded, or the coupling portion of the fixing member comprises a pressing portion configured to apply pressure towards the shielding member perpendicularly to the fixing member to be combined with the coupled portion of the door frame, wherein the shielding member comprises a first through hole formed for the pressing portion to pass through to be combined with the coupled portion of the door frame, and wherein the coupled portion of the door frame comprises a pressed portion pressed with the pressing portion of the fixing member. a main body having a cooking room; and a door arranged on the front of the main body to open and close the cooking room, wherein the door comprises: a door frame configured to have an opening formed to see into the cooking room and a conductive border portion around the opening; a shielding member arranged to cover the opening and having a conductive blocking layer configured to block electromagnetic waves; and a fixing member arranged to combine the door frame and the shielding member, a door frame configured to have an opening formed to see into the cooking room and a conductive border portion around the opening; a shielding member arranged to cover the opening and having a conductive blocking layer configured to block electromagnetic waves; and a fixing member arranged to combine the door frame and the shielding member, wherein the shielding member is arranged such that the blocking layer joins the border portion of the door frame to be electrically connected, characterized in that, the fixing member includes a coupling portion formed in a figure corresponding to the border portion of the door frame and combined with the door frame, wherein the door frame includes a coupled portion arranged in the border portion and combined with the coupling portion of the fixing member, and either the coupling portion of the fixing member comprises a burring portion having a burring hole and a side wall surrounding the burring hole and extending to the shielding member perpendicularly to the fixing member, wherein the shielding member comprises a first through hole formed for the burring portion to pass through to be combined with the coupled portion of the door frame, and wherein the coupled portion of the door frame comprises a second through hole formed for the burring portion to pass through, or the coupling portion of the fixing member comprises a welding projection protruding to the shielding member perpendicularly to the fixing member to enable a welding position to be checked, and to be combined with the coupled portion of the door frame, wherein the shielding member comprises a first through hole formed for the welding projection to pass through to be combined with the coupled portion of the door frame, and wherein the coupled portion of the door frame comprises a conductive welded portion allowing the welding projection to be welded, or the coupling portion of the fixing member comprises a pressing portion configured to apply pressure towards the shielding member perpendicularly to the fixing member to be combined with the coupled portion of the door frame, wherein the shielding member comprises a first through hole formed for the pressing portion to pass through to be combined with the coupled portion of the door frame, and wherein the coupled portion of the door frame comprises a pressed portion pressed with the pressing portion of the fixing member.