Composite of metal and resin and method for manufacturing same

A method of manufacturing the composite of metal and resin, comprising:

• providing a shaped metal piece and cleaning the metal piece with a degreasing agent solution;
• forming a photoresist layer with a plurality of openings on a surface of the metal piece;
• forming a plurality of first inclined holes through the surface of the metal piece, wherein the first inclined holes are arranged inclined with the surface of the metal piece;
• forming a plurality of second inclined holes through the surface of the metal piece, wherein the first inclined hole and the second inclined hole are arranged symmetrically around an axis perpendicular to the surface and communicate with each other on the surface to cooperatively form a micropore, thereby the plurality of first inclined holes and the plurality of second inclined holes form a plurality of micropores;
• removing the photoresist layer;
• inserting and heating the metal piece in an injection mold;
• and
• injecting molten resin piece on the metal piece, the resin piece is embedded to the plurality of micropores to combine with the metal piece as the resin piece cools.