The invention discloses a laser direct writing pre-forming photocatalysis plating preparing method for a material surface metal pattern, and belongs to the technical field of material surface treatment. The laser direct writing technology and the photocatalysis plating technology are combined, and on the basis of a laser direct writing etched pre-formed high-precision nano semiconductor film pattern, photocatalysis plating is conducted for preparing the high-quality metal pattern. The laser direct writing pre-forming photocatalysis plating preparing method for the material surface metal pattern is environment-friendly, short in process, capable of saving metal, efficient and low in cost and has universality and high stability; and the prepared metal pattern is high in size precision, goodin clad layer surface quality and excellent in performance, and the bonding strength between the prepared metal pattern and a base body is high.