Provided is a sterilization apparatus for attaching an appropriate amount of a sterilizing agent to a portion where a sterilizing agent is difficult to adhere with a minimum supply amount in a container such as a beverage container. The inside of the container (100) provided with the mouth (103) and the shoulder (102) connected to the mouth was supplied with the bactericide supplying unit (30) for supplying the bactericide via the mouth, and the bactericide. Based on the detection result by the bactericide measuring device (bactericide detection means) (41) and the bactericide detection means for detecting the degree of the bactericidal agent adhering to the shoulder of the container by irradiating the shoulder with the inspection light, A container sterilization apparatus (12) comprising: a control means (18) for determining a supply amount of the sterilizing agent to the container in the sterilizing agent supply means.飲料容器等の容器において，必要最低限の供給量で，殺菌剤が付着しにくい部分に適切な量の殺菌剤を付着させる殺菌装置を提供する。口部（１０３）と口部に連なる肩部（１０２）を備える容器（１００）の内部に，口部を介して殺菌剤を供給する殺菌剤供給部（３０）と，殺菌剤が供給された容器の肩部に付着した殺菌剤の程度を，肩部に検査光を照射して検知する殺菌剤測定装置（殺菌剤検知手段）（４１）と，殺菌剤検知手段による検知結果に基づいて，殺菌剤供給手段における容器への殺菌剤の供給量を決定する制御手段（１８）とを備えることを特徴とする容器の殺菌装置（１２）。
