A sheet-like covering body (1) according to the present invention is a sheet-like covering body (1) to be attached to a body surface (BS), and has a tubular member (100) inserted into a body from a body surface (BS) A transparent portion (2) covering the insertion opening (102) of the tubular member (100) on the body surface (BS) in a state where the distal end (101) is indwelled in the body And a temperature sensing part (3) located in contact with the body surface (BS) and changing the color according to the temperature.本発明に係るシート状被覆体(1)は、体表面(BS)に取り付けられるシート状被覆体(1)であって、体表面(BS)から体内へと挿入された管状部材(100)の遠位端(101)を体内に留置した状態で、体表面(BS)における前記管状部材(100)の挿入口(102)を覆う透明部(2)と、前記透明部(2)の近傍に位置するとともに、体表面(BS)と接触し、温度に応じて色を変化させる感温部(3)と、を備える。
