To provide a method of preserving and transporting an alkaline metal dispersion which is capable of safely preserving and transporting the alkaline metal dispersion without decomposing the same.

This method of preserving the alkaline metal dispersion consists in inlosing the alkaline metal dispersion into a tank of a sealless mixer constituted by turning a rotary disk for driving furnished with magnets by means of motor driving force and turning a vane disk for agitating furnished with magnets installed within the tank in a contactless state with the outside and disposed to face the rotary disk for driving by accompanying the same in a contactless state in accordance with the each other's magnetic attraction. This method for transporting the alkaline metal dispersion consists in inclosing the alkaline metal dispersion into the tank of the sealless mixer, then transporting the sealless mixer inclosed with the alkaline metal dispersion into this tank.