Provided is a wet state detection device capable of accurately detecting a wide range without requiring troublesome wiring connection work. A stretchable fabric 50 that covers an object in close contact, a sensor 80 that detects a wet state of the stretchable fabric 50, a mounting portion 70 that attaches the sensor 80 to the stretchable fabric 50, and a sensor 80 that detects the wet state. A signal output unit that outputs the wet state of the stretchable fabric 50 to the outside, and a pair of stretchable electrodes 61 and 62 that stretch with the stretchable fabric 50 are disposed on the stretchable fabric 50, and the stretchability The sensor 80 is mounted between the electrodes 61 and 62 so as to be electrically connected via the mounting portion 70.煩わしい配線接続作業を要することなく、広い範囲で精度よく検知できる湿潤状態検知装置を提供する。 対象物を密着状態で被覆する伸縮性生地５０と、前記伸縮性生地５０の湿潤状態を検知するセンサ８０と、前記伸縮性生地５０に前記センサ８０を取り付ける取付部７０と、前記センサ８０により検知された前記伸縮性生地５０の湿潤状態を外部に出力する信号出力部とを備え、伸縮性生地５０とともに伸縮する一対の伸縮性電極６１，６２が前記伸縮性生地５０に配置され、前記伸縮性電極６１，６２間に前記取付部７０を介して前記センサ８０が電気的に接続されるように取り付けられている。
