The invention discloses a temperature control liquid alkali metal surface tension storage tank. The temperature control liquid alkali metal surface tension storage tank comprises a shell and a propellant management device. A cooling pipeline and a heating device are mounted outside the shell and are distributed outside the shell in a mutually spaced mode. The physical characteristic that phase change of liquid alkali metal occurs during cooling is utilized, the cooling circuit and the heating device are designed on the outer side of the storage tank shell, and thus zero supply of alkali metalin the solid state without propellant leakage and normal supply of alkali metal in the liquid state in the storage tank are achieved.