A cash processing apparatus includes a storage section, a money depositing conveyance module, a money dispensing conveyance module and an identification module. The storage section stores money by denominations for paying out. The money depositing conveyance module conveys money from a money depositing port to the storage section. The money dispensing conveyance module conveys money from the storage section to a money dispensing port. The identification module identifies the denomination of the money conveyed by the money depositing conveyance module and also detects stain of the money. The money depositing conveyance module collects the money of which stain is detected by the identification module to a collection section, and conveys the money of which no stain is detected by the identification module to the storage section by individual denominations.