Method of laser digital coloured drawing

The invention discloses a method for laser digital colored drawing, which comprises: (1) a heat transfer printing film including an information layer is attached to the surface of the material going through the colored drawing; (2) the relative position of an optical head and the material going through the colored drawing is adjusted so as to ensure that the irradiating position of the laser beam to target the position of drawing pixels, (3) the laser beam is ensured to perform the instant heating to causes the information layer of the heat transfer printing film on the surface of the material to be melted and dropped off so as to be attached on the material going through the colored drawing; (4) according to position data of the predetermined image pixels, the step (2) and the step (3) are executed once again until the drawing of the information layer is completed; (5) the heat transfer printing film including another information layer is replaced, the step (1) and the step (4) are repeated until the drawing of all of the information layers is completed, namely the required laser digital colored drawing is realized. The method has the advantages of flexible control, high image precision, good colored drawing effect, more particularly, the capability of drawing the optical variable images with metal texture, etc., and is suitable for the application of digital laser colored drawing in the industries of digital printing, anti-counterfeiting and textile.