To provide a pipe cover for actualizing long-term operation of a building by allowing piping without impairing the appearance of the building and the indoor appearance, and easy maintenance and renewal of a pipe, while coping with a change of a plan in future.

A piping groove-shaped recessed portion 21 is previously formed heightwise in an inner wall face 2. In the recessed portion 21, the pipe cover 1 with a pipe insertion portion 121 for covering the recessed portion 21 is provided to be almost flush with the inner wall face 2. The pipe 5 is inserted through the pipe insertion portion 121 into the recessed portion 21 while mounting/demounting the pipe cover 1 thereon/therefrom. The recessed portion 21 is covered with the pipe cover 1 to conceal the pipe 5.