Disclosed herein is a light source apparatus for photo-diagnosis and phototherapy. The light source apparatus includes a first light source, a second light source, a light-guide, an interference filter, and a compensation filter. The first light source is non-coherent, and the second light source is coherent. The light-guide delivers light emitted from the first light source and the second light source. The interference filter is disposed on an optical path of the first light source. The compensation filter is disposed between the first light source and the light-guide, and compensates for an output spectrum of the first light source and converts the output spectrum of the first light source into a predetermined reference output spectrum. Here, the light emitted from the second light source is reflected by the interference filter to be incident to the light-guide and the light from the first light source passes through the interference filter at the same time.
