The present invention is blue with a blue laser beam emitted from the blue laser diode can be irradiated to the fluorescent substance by using an optical fiber and implementing a white light as obtained scattered light in the form of white light for light-converging the structure peeled by a simple and economical method for implementing a hard overlap relates to a white light irradiation apparatus using a laser diode and an optical fiber, white light irradiation device using a blue laser diode and an optical fiber according to the present invention, the laser diode unit with a plurality of blue laser diodes respectively to emit a laser beam; Installation unit for providing the installation space in which the plurality of blue laser diode installed; It is coupled to the front end of the plurality of blue laser diode optical fiber portion for guiding each laser beam to a particular point in the front the mounting body; It is installed at the front a certain point of the installed body, a phosphor for converting the laser beam into a white light; And by a concave front surface of the mounting body mounting the parabolic reflector, parallel light converter for converting the white light converted by the phosphor unit into a parallel beam to be irradiated in the forward direction; and a.