The invention discloses a high-current miniature fuse, which comprises an insulating shell, a metal strip serving as a fuse element and two end electrodes, wherein the cross section of the metal stripis in the shape of a circular arc so as to reduce the width of the metal strip without reducing the rated current capacity of the fuse, thereby facilitating requirements of automated production. Meanwhile, the invention further provides a manufacturing method of the metal strip and a wire feeding device for manufacturing the metal strip, thereby being capable of facilitating industrialization ofthe metal strip.