PROBLEM TO BE SOLVED: To improve convenience. A medical light source device 100 emits a first light source 31 that emits light in a first wavelength band and a second light source that emits light in a second wavelength band different from the first wavelength band. 32 and a light source control unit 941 that controls the operations of the first and second light sources 31 and 32 and causes the first and second light sources 31 and 32 to emit light in pulses, respectively. The light source control unit 941 controls the operations of the first and second light sources 31 and 32 in a state where the frequency of pulse emission of the second light source 32 is less than the frequency of pulse emission of the first light source 31. [Selection diagram] Fig. 2【課題】利便性を向上させること。【解決手段】医療用光源装置１００は、第１の波長帯域の光を発光する第１の光源３１と、第１の波長帯域とは異なる第２の波長帯域の光を発光する第２の光源３２と、第１，第２の光源３１，３２の動作をそれぞれ制御し、第１，第２の光源３１，３２をそれぞれパルス発光させる光源制御部９４１とを備える。光源制御部９４１は、第１の光源３１がパルス発光する頻度に対して第２の光源３２がパルス発光する頻度を少なくした状態で第１，第２の光源３１，３２の動作を制御する。【選択図】図２
