The present invention provides a container for transporting crustaceans, wherein at least one lower transportation water tank is installed in the lower portion of a cargo room, a water tank fixing device is disposed on the inner side surface of the cargo room, so as to fix at least one auxiliary crustacean water tank in a sliding manner in the horizontal direction, and a culture water injection device for injecting culture water into the auxiliary crustacean water tank is installed such that culture water drained from the lower transportation water tank passes through a purification process and is then transferred to the culture water injection device to be injected into the auxiliary crustacean water tank and resupplied to the lower transportation water tank. Therefore, the culture water which conventionally accounts for a larger share of the load of a container can be reduced, compared with the existing container, and the amount of aquatic organisms loadable into the container can be increased by 30-50%, so