The invention discloses a processing and shaping method based on a leather edge bar. Sanding is performed on an inner sole sanding machine; a sanded material is soaked in water for 1 to 5 minutes, wherein the water temperature is controlled at 18 to 25 DEG C; when the edge bar is coiled and folded, the edge bar is placed on an operation table, two thumbs press the inner side of the edge bar and the other fingers are placed on the outer side of the edge bar to coil and fold the edge bar from outside to inside, and the bent place is hammered by a hammer while being coiled; trademark stamping is performed on a trademark machine; and milling is performed on a copying milling bottom edge miller.