To provide a germ/virus preventing guard usable without putting it directly over the face and in non-contact with the head in order to reduce a burden resulting from usage of masks by a sick person himself and/or people around the person and air cleaners and prevent infection, and also provide a germ/virus preventing guard capable of being assembled, installed, stored and handled easily in a sanitary manner and allowing the act of seeing the state of a user from the outside and the act of seeing outside from an inside thereof.

A sheet-like member 7 is provided in a skeletal member 2 serving as a skeleton so as to three-dimensionally cover a space around the head of a human body lying in a sleeping posture and around a bedside in non-contact with the head. The sheet-like member 7 for creating a three-dimensional space is also provided with a fixing member so as to be fixed in an attachable position around the head and bedside. It is made possible to see the state of a user from the outside and see outside from the inside by arranging a transparent portion. The sheet-like member can be made compact by being dismantled or folded.