Processing method of vehicle-mounted stainless steel floor with fine patterns

The invention discloses a processing method of a vehicle-mounted stainless steel floor with fine patterns. The method comprises a forming step of a stainless steel outer cover with fine patterns and a foam filling step, and is characterized in that: in the forming step of the stainless steel outer cover with the fine patterns, when or after notching is conducted on four corners of a stainless steel plate, a circular hole is formed in the inner corner of each notch, so that the gap of each bent and formed notch is very small. The gap of each bent and formed notch is very small, and the bent and formed notches do not need to be tailor-welded any more, so that the phenomenon that the surface of the vehicle-mounted stainless steel floor with the fine patterns (egg grains) is polished and thus the appearance is not attractive is avoided. In addition, a sealant is smeared on the inner sides of the gaps of the bent and formed notches to seal the gaps of the bent and formed notches, foam can be prevented from being e