Self-heating ammonia decomposition hydrogen production device

The invention discloses a self-heating ammonia decomposition hydrogen production device which comprises an ammonia decomposition hydrogen production unit and a heat supply unit for supplying heat to the ammonia decomposition hydrogen production unit, and the heat supply unit comprises an ammonia self-heating reactor. The ammonia self-heating reactor is provided with an oxidation reaction cavity for carrying out ammoxidation reaction, and a reaction gas inlet and a mixed gas outlet which are communicated with the oxidation reaction cavity, the reaction gas inlet is used for inputting mixed gas of ammonia gas and air into the oxidation reaction cavity, and the mixed gas outlet is used for discharging the mixed gas generated by the ammoxidation reaction. The heat supply unit is only used as the only heat source of the ammonia decomposition hydrogen production unit, compared with the prior art, the heat supply unit is easier to use, dependence on the external environment is reduced or almost no dependence exists,