Disclosed herein is a fat removal 1414 nm Nd:YAG laser apparatus for direct irradiation into fat. The apparatus includes a flashlamp which is supplied the electrical power from the power supply unit and emitting light an Nd:YAG rod radiate a laser wavelength and amplify a laser wavelength after absorbed the pumping light from flashlamp a high reflector and an output coupler located on two sides of the Nd:YAG rod and configured to reflect laser wavelength radiated from the Nd:YAG rod a convergence lens for converging a laser beam an optical fiber for delivery the laser beam and a cannula coupled to the output end of the optical fiber and configured to allow the optical fiber to extend underneath skin without being bent, thereby delivery the laser beam to hypodermic fat. Both end surfaces of the Nd:YAG rod, the internal surface of the high reflector, and the internal and external surfaces of the output coupler are coated in order to obtain only the laser beam with the wavelength of 1414 nm wavelength.
