In a value box in an electronic money system with a high reliability which is excellent in usage efficiency and maintenance, a front door and a rear door are provided before and after a main body portion and an indicator is provided to show operating states of a door locking key and a whole value box, particularly, a state in which a trouble or the like has occurred in the value box and a maintenance is necessary is provided for the front door. A communication line for transmitting information regarding power source lines and electronic money for a number of IC card readers/writers provided in the main body is connected to the rear door. The front door can be opened by hinges. A number of IC card readers/writers are enclosed in the main body portion. IC card inserting slots of IC cards for those IC card readers/writers are arranged and provided in the front surface of the main body portion at two upper and lower stages. An IC card operation indicator is provided in correspondence to each IC card inserting slot.