PURPOSE: To provide the manufacturing method of a micro-floppy shutter, which can manufacture the shutter for a micro-floppy having the fine surface irregularity pattern with excellent workability and can achieve the reduction in fail rate by using inexpensive metallic plate material, on which surface machining for hair lines and the like is not performed.

CONSTITUTION: In the manufacturing method of a micro-floppy shutter, a fine irregularity pattern 3 is formed on the surface of a metallic plate 1 by press machining in the step of the press machining when a shutter 1 for a micro- floppy is manufactured by performing the press machining for the metallic plate 1a.