To make it possible to easily perform a gate exiting process even if a paid fare is insufficient when a passenger passes through a gate by providing a calculating means which calculates the deficient amount of money when a passenger ticket which is insufficient in amount is inserted into the insertion slot of the main body of an automatic ticket examining machine and displaying the calculated deficient amount of money.

When the passenger ticket (a) which does not meet fare amount conditions or gate exiting conditions such as a date is inserted into the insertion slot 1, the passenger can not pass through the gate with the passenger ticket (a), so a door 9 is closed and a guidance of 'You can not pass through with this passenger ticket'. is displayed on a guidance screen (g). When the passenger ticket (a) which is insufficient in fare amount is inserted into the insertion slot 1, a CPU calculates the deficient amount of money of the passenger ticket (a) and displays the calculated deficient amount of money on the guidance screen (g) through a display driver. Consequently, the gate passing process can be performed even if the paid fare is insufficient at the time of exiting from the gate.