PROBLEM TO BE SOLVED: To provide a display by which a doctor or a nurse can easily evaluate the propriety of a measured blood pressure value while a subject to be examined is doing exercise, or his or her body motion is large.SOLUTION: A blood pressure measuring device includes: a cuff for compressing a blood vessel of a subject to be examined means for controlling and measuring air pressure in the cuff vibration A detection means for detecting a vibration A generated from the blood vessel during the application of pressure in the cuff or the reduction of pressure in the cuff vibration B extraction means for removing noise from the vibration A and extracting a vibration B vibration strength derivation means for acquiring the vibration strength of the vibration B spectrum analysis means for subjecting the vibration B to a spectrum analysis and acquiring a frequency spectrum blood pressure determination means for determining a blood pressure value of the subject to be examined from the vibration strength or the frequency spectrum and the pressure in the cuff and display means for simultaneously displaying the pressure in the cuff, the vibration strength, the frequency spectrum, and the blood pressure value.COPYRIGHT: (C)2014,JPO&INPIT【課題】運動中や体動が激しい場合、測定した血圧値の妥当性を医師や看護師が評価し易い表示を提供する。【解決手段】被験者の血管を圧迫するカフと、カフ内の空気圧を制御及び測定する手段と、カフ内の加圧時又は減圧時に前記血管から発生する振動Aを検出する振動A検出手段と、振動Aからノイズを除去し振動Bを抽出する振動B抽出手段と、振動Bの振動強度を得る振動強度導出手段と、振動Bをスペクトル解析し周波数スペクトルを求めるスペクトル解析手段と、振動強度若しくは前記周波数スペクトル並びに前記カフ内圧により、前記被験者の血圧値を決定する血圧値決定手段と、カフ内圧、及び前記振動強度、及び前記周波数スペクトル、及び前記血圧値を同時に表示する表示手段とを備えた血圧測定装置。【選択図】図1