A cash processing system is capable of reducing manual operation in placing and collecting from a cashing handling apparatus, such as ATM's, cash dispensing machines and so forth and thus can eliminate the occurrence of error or theft. The cash processing system includes a detachable cash safe, a cash processing apparatus that detachably receives the cash safe for automatically setting a commanded amount of cash therein, and a cash handling apparatus that detachably receives the cash safe, in which the commanded amount of cash is set, for performing services including a cash dispensing service.