The present application relates to an unloading and temporary storage device. The unloading and temporary storage device includes a stock bin, a stock bin external member, a stock bin internal member, a shielding module and a loading module; the stock bin includes a barrel and a tank body; the stock bin external member includes a cooling water jacket; the stock bin internal member includes a straight bin, an inclined bin and an unloading bin that communicate sequentially; the shielding module includes an external shield and a neutron shield; the loading module includes a loading body; and sphere inlet passages are provided in the loading body. The unloading and temporary storage device can perform the functions of receiving, temporarily storing, atmosphere switching, and unloading of spherical elements, and also has the safety functions of ensuring geometrical integrity of the spherical elements, radiological protection and residual heat removal.