The invention discloses an antenna manufacturing method, an antenna apparatus and a mobile terminal. The antenna manufacturing method comprises the steps of: utilizing laser to process at least four micro-vias at preset positions of a plastic base material capable of being activated by laser; utilizing laser to activate antenna areas of first and second surfaces of the base material; and performing chemical plating on the plastic base material to from a first metal coating in an antenna area of the first surface and a second metal coating in an antenna area of the second surface, and to form metal posts in the micro-vias to connect first and second metal coatings. The antenna manufacturing method has the characteristics of simple process; the antenna apparatus manufactured by the method is seamless and the antenna has good performances.