A hydrogen fuel cell, comprising a fuel cell stack assembly and an outside plate gas distribution device; the fuel cell stack assembly comprises a first insulating plate, a first power supply plate, a cell pack, a second power supply plate and a second insulating plate set in series; the first power supply plate and the second power supply plate function as the anode output and the cathode output of the cell pack, respectively; the fuel cell stack assembly is encapsulated with a hard housing; characterised in that the outside plate gas distribution device is fixed on the hard housing; the outside plate gas distribution device comprises a-working gas flow distribution device and a heat dissipation gas distribution device; the working gas flow distribution device is provided with a fan mount for connecting with a working fan, and the working gas flow distribution device extends into the inner cavity of the hard housing from outside of the hard housing; the gas flow outlet of the working gas flow distribution device is connected with the air inlet gas distribution nozzle of each unit cell in the cell pack; the heat dissipation gas distribution device comprises a heat dissipation channel set outside the hard housing and interconnected with the inner cavity of the hard housing, and a heat dissipation port set on the hard housing; the heat dissipation channel is provided with a heat dissipation fan mount for connecting with a heat dissipation fan; the hard housing for encapsulating the fuel cell stack assembly comprises a gland, two concave-shaped plates, a top plate, a bottom plate, a side plate and a flange plate; the two concave-shaped plates are set oppositely, one end of a concave-shaped plate is fixedly connected with the side plate and the other end is fixed with the gland through the flange plate; power source interfaces of two kinds of polarities are set on the gland and the side plate, respectively; the gland is provided with a fuel gas inlet and the side plate is provided with a fuel gas outlet; the cell pack comprises a plurality of individual cells connected in series, each of the individual cells comprises an anode guide plate, a membrane electrode and a cathode guide plate; the front of the anode guide plate and the front of the cathode guide plate are adjacent to two side surfaces of the membrane electrode, respectively; the back of the anode guide plate is adjacent to the cathode guide plate of another unit cell; the back of the cathode guide plate is adjacent to the anode guide plate of another unit cell; the anode guide plate is provided with a main hydrogen gas inlet and a main hydrogen gas outlet, the front of the anode guide plate is provided with a hydrogen guide groove and the back is provided with a first air inlet gas distribution nozzle and a first air inlet groove interconnected with the first air inlet gas distribution nozzle; the back of the anode guide plate is further provided with a first heat dissipation groove and a first air exhaust groove; the cathode guide plate is provided with a main hydrogen gas inlet and a main hydrogen gas outlet, the front of the cathode guide plate is provided with an air inlet, an air outlet and an air guide groove, and the back is provided with a second air inlet gas distribution nozzle and a second air inlet groove interconnected with the second air inlet gas distribution nozzle; when the cathode guide plate is matched with another anode guide plate, the first air inlet gas distribution nozzle and the second air inlet gas distribution nozzle form a complete air inlet gas distribution nozzle, and the first air inlet groove and the second air inlet groove form a complete air inlet channel; the air inlet on the front of the cathode guide plate is set in the air inlet channel; the back of the cathode guide plate is further provided with a second head dissipation groove and a second air exhaust groove; the air outlet on the front of the cathode is interconnected with the second air exhaust groove on the back of the cathode guide plate; the main hydrogen gas inlets and the main hydrogen gas outlets of all the unit cells in the cell pack is interconnected with each other, and the main hydrogen gas inlets on all unit cells in the cell pack connected with an external hydrogen gas source via a hole set on the housing; the air inlet gas distribution nozzle on each unit cell in the cell pack is respectively interconnected with the gas flow outlet of the working gas flow distribution device; the first heat dissipation groove on the back of the anode guide plate and the second heat dissipation groove on the back of the cathode guide plate are combined into a heat dissipation channel; the second air exhaust groove on the back of the cathode guide plate and the first air exhaust groove on the back of the anode are combined into an exhaust gas channel; the back of the anode guide plate and the back of the cathode guide plate are provided with a plurality of reinforcing ribs, the reinforcing ribs form a turbulator in the first heat dissipation groove and the second heat dissipation groove.