Light source device of fluorescence microscope

The invention discloses a light source device of a fluorescence microscope. According to the structure of the light source device, more than two LEDs are circumferentially distributed on a turntable; a rotation shaft is sleeved with a wiring disc and a wiring seat; the wiring disc and the wiring seat are commonly located between the turntable and a mounting bracket; the wiring disc is fixed to the turntable; the wiring seat is fixed to the mounting bracket; the positive pole and negative pole of each LED are both led to the surface of the wiring disc through leads, and a corresponding pair of positive and negative pole contacts is formed on the surface of the wiring disc; the more than two groups of positive and negative pole contacts are circumferentially distributed and all face the wiring seat; and a pair of positive and negative pole contact sheets which is in conduction with an external power source is formed on the surface of the wiring seat, and is located at the common circular track of the rotation of the more than two groups of positive and negative pole contacts, and can be attached to any one of the more than two groups of positive and negative pole contacts. With the light source device adopted, technical problems existing in prolonging the service life of a light source on a fluorescence microscope can be solved. The light source device of the invention has the advantages of long service life and the like.