The invention relates to a quality test system and a quality test method of the therapeutic optical head of an intense pulsed light photon therapeutic device and belongs to the field of selective spectrum intense light medical measurement and test. The device comprises a light source system, a monochromator system, a light converging system, a therapeutic optical head, a photoelectric receiving part and a computer, wherein the therapeutic optical head is fixed on a test platform; the computer controls the test platform to move in two directions through a step motor; the light emitted by the light source system passes through the monochromator system and the light converging system in turn before being projected onto the therapeutic optical head; and the computer judges if the photoelectric receiving part receives an optical signal and displays the light spectrum distribution condition of the therapeutic optical head according to the result of the judgment. The quality test method of the invention can obtain the light spectrum curve graph of each point and further obtain the three-dimensional graph of the light spectrum of the whole working face. Thus, the quality consistency of the device is ensured fundamentally and technical foundation in physical aspect is provided according to the optimal clinic effect of different individuals.