Disclosed is a phototherapeutic apparatus provided with: an irradiation probe for irradiating an organism with irradiation light； a probe fixation part in which the irradiation probe is inserted and which is fixed on the organism； an observation module including an observation means which is disposed in the probe fixation part and which is for observing an irradiation site illuminated with irradiation light applied on the organism； and a transfer means which is capable of transferring, during observation of the irradiation site, the observation module to a space in which the irradiation probe is set in the probe fixation part.
