[Problem] To provide a photoacoustic measurement device in which it is possible to detect malfunctions in a photoacoustic wave generation unit comprising a light guide member and a light-absorbing member. [Solution] This photoacoustic measurement device is equipped with: a main light source (35) which emits pulsed laser light； an auxiliary light source (45) which emits light having a different wavelength from the wavelength of the pulsed laser light emitted from the main light source (35)； a light guide member (16) which is connected in a manner enabling switching between the main light source (35) and the auxiliary light source (45), and which guides, to the distal end, light emitted from the main light source (35) and the auxiliary light source (45), which enters from the proximal end； an inserted object (15) which has at least the distal portion thereof inserted within a subject, and which encloses at least the distal end of the light guide member (16) and a light-absorbing member (17) connected to said distal end and for absorbing the pulsed laser light and generating photoacoustic waves； and a photoacoustic wave detection unit (11) which detects the photoacoustic waves generated from the distal portion of the inserted object (15) inserted within the subject. The photoacoustic measurement device is provided with, as an operating mode, an abnormality detection mode for driving the auxiliary light source (45) and detecting abnormalities in a photoacoustic wave generation unit (18) comprising the light guide member (16) and the light-absorbing member (17).La présente invention vise à fournir un dispositif de mesure photo-acoustique dans lequel il est possible de détecter des dysfonctionnements dans une unité de génération d'ondes photo-acoustiques comportant un élément de guidage de lumière et un élément d'absorption de lumière. À cet effet, la présente invention concerne un dispositif de mesure photo-acoustique équipé: d'une source lumineuse principale (35) qui ém
