Steel bottom die for manufacturing hardening indentation for soft packing box

The utility model provides a steel bottom die for manufacturing hardening indentation for a soft packing box. The steel bottom die comprises a die-cutting bottom plate (1); a plurality of reversed indentation lines (4) are arranged on the upper plane of the die-cutting bottom plate and protrude from the upper plane to form the indentation (3) on the inner bottom of the packing box; the reversed indentation lines (4) are that boss surfaces are arranged corresponding to the reversed indentation lines, and then a numerically-controlled processing device directly processes the reversed indentation lines on the boss surfaces of the die-cutting bottom plate (1). The steel bottom die for manufacturing hardening indentation for the soft packing box has the advantages of being simple in structure, balance in pressure, accurate in die-cutting dimension, and stable in reversed indentation lines.