Provided is a continuous decontamination device which uses a decontamination agent such as hydrogen peroxide, which has been widely used in recent years, without using a high-priced electron accelerator, and is capable of achieving of treatment in a short amount of time while achieving a uniform decontamination level at each section and thereby is capable of batch treatment of articles to be decontaminated. The continuous decontamination device is provided with a device body that has a decontamination region and an aeration region, a conveyance means that conveys an article, a mist supply means, a mist control means, and an aeration means. The mist supply means converts the decontamination agent into a decontamination agent mist and supplies the same into the decontamination region. The mist control means is provided with a vibration board disposed in the vicinity of an inner wall of the decontamination region and causes the vibration board to ultrasonically vibrate to generate an acoustic flow formed by ultrasonic waves in a perpendicular direction from the board face. By causing a pressing force from the acoustic radiation pressure to act on the decontamination agent mist supplied into the decontamination region, the decontamination agent mist is concentrated on the outer surface of the article that is conveyed inside the decontamination region by the conveyance means.L'invention concerne un dispositif de décontamination continue qui utilise un agent de décontamination tel que le peroxyde d'hydrogène, qui a été largement utilisé ces dernières années, sans utiliser d'accélérateur d'électrons à prix élevé, et est capable de réaliser un traitement en un court laps de temps tout en obtenant un niveau de décontamination uniforme au niveau de chaque section et est ainsi capable de traiter par lots des articles à décontaminer. Le dispositif de décontamination continue est pourvu d'un corps de dispositif qui a une région de décontamination et une région d'aération, d'un m