Provided is a sensor sheet 100 comprising: a lower sheet 110 that is affixed to the skin of a subject； an upper sheet 120 that is affixed to the surface side of the lower sheet 110； and an electric circuit section 130 provided to an area corresponding to the upper sheet 120. A peripheral edge section 110a has a single-layer structure comprising only the lower sheet 110. A central area has a multilayer structure comprising the lower sheet 110 and the upper sheet 120. In this way, the ability to conform to the skin is enhanced in the peripheral edge section 110a of the sheet where itching is likely to occur, the electric circuit section 130 can be held firmly in the central area, and it is thereby possible to obtain a sensor sheet 100 that can reduce itching experienced by a subject without decreasing measurement accuracy when said sensor sheet 100 is attached to the subject over a long period of time.
