Hydrogen Supply System for Fuel Cell and Inspection Method Thereof

An embodiment hydrogen supply system includes a fuel cell, a hydrogen supply line connected to an inlet side of an anode of the fuel cell, a discharge valve provided on an outlet side of the anode of the fuel cell to discharge exhaust gas of the anode of the fuel cell to an outside, and a controller configured to perform a hydrogen-line inspection mode to determine whether there is a leak in the fuel cell or the hydrogen supply line by cutting off air supply to the fuel cell, supplying hydrogen through the hydrogen supply line, and blocking the discharge valve, and opening the discharge valve to determine whether the discharge valve is defective in response to a determination that the fuel cell and the hydrogen supply line are normal.