PURPOSE: To attain reliable detection by providing a coin input device in which a nonconforming object can be exactly detected and ejected, and operating the detection and ejection sufficiently before a coin path for preventing access to the coin path when the nonconforming object is inputted, and/or in case of an illegal means.

CONSTITUTION: The movement of a coin can be attained between a first position where coin receiving parts 40 and 41 are communicated with an opening 2 and access to a coin selector 14 of a processor is blocked, and a second position where the coin receiving parts 40 and 41 are communicated with the coin selector 14, and access to the opening 28 is blocked by a positioning disk 29 having the coin receiving parts 40 and 41.