PROBLEM TO BE SOLVED: To provide a harness wearing state monitoring device and the like allowing a user to easily and appropriately wear the harness of a walking aid device.SOLUTION: The harness wearing state monitoring device includes: a pressure sensor 20 that is provided on a band-like body 10a as a so-called belt of a harness fitting body 10 for fitting a walking aid device that is worn around a leg of a user and is functioned as a device for forcibly moving the leg a pressing force detection part 30 for detecting pressing force applied to the pressure sensor 20 and output means that outputs the detected pressing force.COPYRIGHT: (C)2014,JPO&INPIT【課題】簡易且つ適切に歩行補助装置の装着具を使用者に装着可能な装着具の取付状態監視装置等を提供する。【解決手段】使用者の脚部に装着され、当該脚部を強制的に動作させる装置として機能する歩行補助装置を取り付けるための装着具取付体10の、ベルトと称されるような帯状体10aに設けられる圧力センサ20と、圧力センサ20への押圧力を検出する押圧力検出部30と、検出された前記押圧力を出力する出力手段と、を備えている。【選択図】図3