The invention relates to a spent fuel storage cell. The storage cell sequentially comprises a neutron poison layer, a clamping layer and a support layer from inside to outside, wherein the neutron poison layer is a storage cavity (5) formed by four neutron poison boards (1) in an enclosed manner and used for placing a spent fuel component; the clamping layer comprises a hoop body (3) and a hoop strip (2) which are in butt joint, and the clamping layer is compressed to the outer side of the neutron poison layer; the support layer comprises two support plates (4) which are in butt joint, and the support layer is compressed to the outer side of the clamping layer. The spent fuel storage cell is good in rigidity, good in neutron capture ability, capable of guaranteeing the storage safety of the spent fuel component, simple in structure and easy to manufacture.