The invention discloses a manufacturing method of an automobile solid wood re-pressing mortise split joint foot pad. The method includes the steps of component manufacture, component splice, form opening and edge banding, wherein components are composed of a wood plastic board, a foam board, a plurality of solid wood boards and leather, and the shape of the components is clipped according to the size of an automatic terrace. The corresponding edge of each solid wood board is provided with a concave-and-convex mortise, a concave hole is drilled in one side of each board surface, a magnet is embedded in each concave hole, and the solid wood boards are connected through the mortises in a split joint mode. The upper side surface and the lower side surface of the foam board coated with double-surface adhesive sticker are respectively adhered with the solid boards and the wood plastic board, and the leather coated with adhesion agents is adhered on the other side of the wood plastic board and is pressed through a cold press. The manufacturing method is relatively simple in process procedure, and the foot pad is easy to manufacture, beautiful, resistant to scrapping and abrasion, and convenient to use and clean, and has elastic, sound-proof, thermal, moisture-proof and hygienical effects.