Disclosed herein are a cooking apparatus including a main body including a cooking compartment configured to cook food using microwaves, and a door configured to open or close the cooking compartment, wherein the door includes a door frame in which an opening is formed so that the cooking compartment is visible therethrough, and a shielding plate including a substrate and a multi-shielding layer, with which the substrate is coated to prevent microwaves in the cooking compartment from leaking to an outside, and coupled at the opening. The door of the cooking apparatus allows an inside of the cooking compartment to be better seen from the outside.