In a protective cap housing a shield member for covering almost all of a face of a wearer in the interior of a cap body, the protective cap capable of retracting the shield member in the interior of the cap body is provided. It is a protective cap 1 having a cap body 3 formed in a semi-spherical-shell-like form for protecting a head of a wearer, a shield member 5 for protecting almost all of a face of the wearer, and guide means 7 for guiding the shield member 5 to move along a curved surface of the cap body 3 between a housing position P1 to be housed in the cap body 3 and a shielding position P3 for covering almost all of the face of the wearer.