Metal case marking paint removal method

The invention is applicable to the field of chemical industry, and provides a metal case marking paint removal method which comprises the following steps: coating a marking paint with a hardening agent, curing the marking paint to obtain a marking paint curing film layer; and stripping the marking paint curing film layer; wherein the curing processing method is as follows: in the condition of 90 +/-5 DEG C, performing dry processing for 60 +/-5 minutes; the metal case marking paint removal method does not damage a metal case, can clearly remove the marking paint, and is simple.