Container sterilization device

The present invention provides a container sterilization device capable of reliably preventing leakage of a sterilizing agent and efficiently supplying the sterilizing agent into a container. The rotating body is provided with a plurality of clamps for holding the container, and can rotate freely integrally and coaxially with a rotating shaft (32) of the rotating joint (30). The manifold (22) is integrally and coaxially rotatable with the rotating shaft (32), and is connected to a plurality of sterilization nozzles for supplying hydrogen peroxide gas to the container. The bactericide supply pipe (40) is attached to the fixed member (31) of the rotary joint (30) and supplies a bactericide into the manifold (22). A plurality of supply ports (44) communicating with the sterilization nozzles are formed in the manifold (22). The sterilizing agent supply pipe (40) is provided with a shielding member (43) which shields the sterilizing agent in the manifold (22) so that the sterilizing agent is not supplied to the su