This laser therapy device is provided with: a plurality of light sources for outputting laser light current detection units for detecting respective current values of current supplied to the plurality of light sources light quantity detection units for detecting the respective quantity of laser light output by the plurality of light sources a laser coupling unit for coupling the laser light output by the plurality of light sources a laser irradiation unit for conducting at least one of light guidance and beam formation of the laser light coupled by the laser coupling unit to effect conversion thereof to therapeutic light, and irradiate a diseased area and a controller for controlling, on the basis of the results of detection by the current detection unit, the current supplied to the plurality of light sources, to regulate the laser output to a prescribed value. The controller stores in advance prescribed threshold values respectively established for current values of current supplied to the plurality of light sources by the controller, and in the event that, during output of laser light, at least one of the current values of the current values to the plurality of light sources detected by a current detection unit equals or exceeds a prescribed threshold value, performs control to shut off the current supplied to the at least one light source for which the current value equals or exceeds the prescribed threshold value, and supply current to the other light sources in such a way as to compensate for the output of laser light by the light source for which the current value equals or exceeds the prescribed threshold value.Linvention concerne un dispositif de thérapie laser qui comprend : une pluralité de sources de lumière pour émettre une lumière laser des unités de détection de courant pour détecter des valeurs de courant respectives dun courant fourni à la pluralité de sources de lumière des unités de détection de quantité de lumière pour détecter la quantité respe
