The invention provides a laser printing metal button and its processing method. The laser printing metal button includes a first button body and a second button body which can be buckled together or separated from each other, the first button body includes a button surface and a button shell which are arranged on the two sides of cloth respectively, and the center of the button shell is provided with a buckling cavity; the button surface includes a button surface base, a cover plate and a fixing ring, and the outer surface of the cover plate forms a laser printing layer through the laser printing technology; the cover plate is arranged on the button surface base, the fixing ring presses the edge of the cover plate and is fixed with the button surface base; the center of the button surfacebase is provided with a downward riveting shaft in a protruding mode, when the button surface is fixed with the button shell, and the riveting shaft passes through the buckling cavity and form a riveting part; a material placement cavity used for placing mothballs is formed between the cover plat and the button surface base, and the riveting shaft is provided with a ventilation channel communicated with the buckling cavity and the material placement cavity; the second buckle body includes a button bead and a button leg arranged on the two sides of cloth respectively, and the button bead and the button leg can be buckled or separated from each other.