Endoscope cold light source module capable of achieving white light and double-color narrow-band light through double light sources

The utility model provides an endoscope cold light source module capable of realizing white light and double-color narrow-band light by double light sources, which comprises a white light source, a narrow-band light source, a dichroscope and a focusing lens, the dichroscope is positioned at the orthogonal position of the light paths of the white light source and the narrow-band light source, a rotatable filter lens is arranged between the white light source and the dichroscope, and the focusing lens is positioned at the orthogonal position of the light paths of the white light source and the narrow-band light source. The rotatable filter lens is connected with the rotating mechanism; the focusing lens is positioned on one side of the dichroscope; light emitted by the white light source is filtered by the rotatable filter lens, then is emitted to the dichroscope, is combined with light, reflected by the dichroscope, of the narrow-band light source, and then is emitted through the focusing lens. By adopting the