Provided are an electromagnetic shielding structure and a method of manufacturing the electromagnetic shielding structure. The electromagnetic shielding structure shields an electromagnetic wave having a specific frequency band, is miniaturized, and includes a strip line, and a couple of plate structures facing each other and connected to both ends of the strip line. The method of manufacturing the electromagnetic shielding structure is simple. An electromagnetic wave having a specific frequency band is shielded, and variation in electromagnetic shielding performance according to the position of an electromagnetic shielding construction is prevented, thus constructing a reliable electromagnetic shielding concrete building.