A medical wound healing accelerator is disclosed. The medical wound healing accelerator according to an embodiment of the present invention comprises: a body attachably/detachably provided on a fixing pin, of an external fixator for fractures, inserted into a bone through a skin； a plurality of light source units arranged at one lateral surface of the body so as to emit, at the skin, light providing a beneficial effect to a wound； and a controller electrically connected to the light source units so as to control operations of the light source units. Additionally, an osteomyelitis treatment device comprises: an insert insertable into an osteomyelitis part in the human body； and a plurality of light-emitting members provided to the insert so as to emit light, wherein the plurality of light-emitting members are disposed to be spaced apart from each other in the lengthwise direction of the insert, and a part of the insert in which the plurality of light-emitting members are spaced apart from each other can be cut or bent so as to correspond to the shape of the osteomyelitis part.
