In order to improve user-friendliness, a remaining liquid-medicine amount of a liquid-medicine bag (110) obtained by subtracting a liquid medicine dose administered to a user by driving a dispensing portion (130) from a liquid medicine amount filled in a liquid-medicine bag (110) using the liquid-medicine filling device (5) is displayed on a display portion (505). Therefore, it is possible to allow a user to recognize the remaining liquid-medicine amount of the liquid-medicine bag (110) and improve user-friendliness.