NOVELTY - A hydrogen production apparatus has a container (1) of pressurizing gas, liquid container (2), liquid exhaust passage, reaction container (3) for hydrogen producing agent, hydrogen exhaust passage (19,20), storage container (4) of liquid, liquid replenishment path (24), non-return valve (25) in the path of liquid replenishment path, and deaeration portion (15) of compression gas.    USE - Hydrogen production apparatus is used for fuel cell.    ADVANTAGE - The hydrogen production apparatus enables effective recycling of waste liquid with hydrogen gas discharged from the reaction container.    DETAILED DESCRIPTION - A hydrogen production apparatus has a gas container accommodating compression gas for acting pressure on a liquid, liquid container for accommodating the liquid, liquid exhaust passage for discharging the pressurized liquid from the liquid container, reaction container for accommodating hydrogen producing agent which generates hydrogen by reacting with the discharged liquid, hydrogen exhaust passage for discharging generated hydrogen gas from the reaction container, storage container for storing liquid in path of hydrogen exhaust passage and discharged with hydrogen gas, liquid replenishment path for feeding the liquid in storage container into liquid container side, non-return valve provided in the path of liquid replenishment path, deaeration portion for emitting the compressed gas out of the container, such that liquid in the storage container is supplied to the liquid container side through the non-return valve by emitting compression gas from deaeration portion.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic structure of the hydrogen production apparatus.    Gas container (1)    Liquid container (2)    Reaction container (3)    Storage container (4)    Gas supply path (12)    Deaeration portion (15)    Liquid exhaust passage (17)    Hydrogen exhaust passages (19,20)    Non-return valves (21,23,25)    Replenishment portion (22)    Liquid replenishment path (24)