The invention discloses a metal hydride hydrogen storage tank with a spiral structure. The metal hydride hydrogen storage tank comprises a tank body, an air guide pipe, a spiral structure part, a hydrogen storage alloy powder and the like. The metal hydride hydrogen storage tank has the advantages that by arranging the spiral structure part in the tank body, firstly, the heat transfer of a hydrogen storage alloy powder bed in the metal hydride hydrogen storage tank is effectively enhanced, and the hydrogen charging/discharging property of the metal hydride hydrogen storage tank is improved; then, when the hydrogen storage alloy powder is loaded and filled, the hydrogen storage alloy powder is sufficiently and uniformly loaded and filled by using the spiral structure part, and the spiral structure part is used for fixing and supporting the hydrogen storage alloy powder in the use process of the metal hydride hydrogen storage tank, so that the local gathering of the hydrogen storage alloy powder is prevented, the excessive plastic deformation and even breaking due to overlarge local stress of the metal hydride hydrogen storage tank are avoided, the safety of the metal hydride hydrogen storage tank is improved, and the service life of the metal hydride hydrogen storage tank is prolonged.