The invention provides a car grille hot stamping technology. The technology comprises the following steps: 1, making a hot stamped film which sequentially comprises a carrier, a stripping layer, a protection layer, a metal layer and a sticking layer from top to bottom; 2, selecting a stamping clamp: arranging a direction adjusting mechanism below the stamping clamp, wherein the direction adjusting mechanism can realize the adjustment of the X direction, the Y direction and the Z direction in the space; 3, heating silica gel of an upper die in the stamping process, pressing the silica gel to make the silica gel touch the hot stamped film in order to press the hot stamped film and compact the hot stamped film on the stamped surface of a grille component on the surface of a lower die; and 4, separating a stamped surface area and a non-stamped surface area, arranging the stamped surface to be a projecting structure, and dividing the whole grille component into a plurality of parts, and stamping the grille component. The hot stamping technology adapts to multiple form styles, has the advantages of short shaping time, provision of a bright surface effect, avoiding of toxic gases or wastewater generated in the electroplating process, energy saving, and environmental protection; and a stamping device has the advantages of small occupied space, small energy consumption and low development cost.