To provide a method for washing a container which can prevents the peeling and damage of the inner surface coating of a container made of aluminum or the like.

The container 12 is inserted into, and held in a container holder 11 having a plurality of holes 11a on the outer circumference surface and washed by spraying a washing liquid on the inner and outer circumferential surfaces through nozzles 13. In order to wash the inner circumferential surface, the spray nozzles 13 are inserted into the container, and washing is carried out by moving the spray nozzles up and down in the axis direction vertically.