A sheet-shaped covering (1) is for attachment to a body surface (BS) and includes a transparent section (2) covering an insertion opening (102) in the body surface (BS) for a tubular member (100) inserted into a body through the body surface (BS) so that a distal end (101) of the tubular member (100) is placed inside the body, and a temperature sensitive section (3) that is positioned near the transparent section (2), contacts the body surface (BS), and changes color in accordance with temperature.
