Abstract: The present invention relates to a shin guard, and in particular to a shin guard which is well adapted irrespective of a body shape of a user based on a flexible construction and is capable of implementing a good ventilation and an easier sweat exhaust. The shin guard according to the present invention includes a plate shaped smooth synthetic resin cover in which a plurality of mesh ventilation holes are formed in the whole surfaces of the cover, said cover being curved for thereby being well stuck to a shin of a user, and a foam synthetic resin buffering plate which is attached to a back surface of the cover and includes a plurality of ventilation holes corresponding to the mesh ventilation holes formed in the cover and a plurality of protrusions in the back surface of the same for thereby implementing a good ventilation through each ventilation hole.