A conveyance system includes a chamber 1, a plate 7A disposed in the chamber 1, the plate 7A being used for disposing an article thereon, an in-chamber bridge 19 disposed in the chamber 1 and capable of coming into contact with the plate 7A, a moving member 3A that moves along the in-chamber bridge 19 and the plate 7A to move the article on the in-chamber bridge 19 and the plate 7A, and a sterilization device 100 that sterilizes an interior of the chamber 1, in which the chamber 1 is allowed to be tightly sealed, with the moving member 3A disposed on the in-chamber bridge 19.