According to the America′s NIF, France′s LMJ and Russia′s LUTCH device platinum particle detection parameters, a large diameter N31 Nd:glass platinum particle scanning platform was established by using the Nd:YAG laser(10 J, 10 ns, 10 Hz). On this platform, the damage under high power laser irradiation of the inclusion of platinum particles in the large diameter Nd:glass was tested and studied. The morphology of the inclusions in the platinum particles was observed and discussed by using the high resolution optical stereo microscope. Preliminary studies show that Nd:glass produced under normal production conditions does not contain platinum particles when the process of removing platinum inclusions. During production is abnormal, it is possible that platinum inclusions are contained inside the Nd:glass. The scanning parameters established in this paper can effectively detect invisible inclusions, and timely and accurately reflect platinum process conditions to ensure the normal production of Nd:glass.