An overhead transport vehicle includes a fall prevention mechanism including a first rotary member, a fall prevention member, and a second rotary member. The first rotary member includes a base end portion supported so as to be rotatable about a first rotation shaft extending along direction Y. The fall prevention member is provided in a tip end portion of the first rotary member and is movable to a space below a cassette. The second rotary member includes a base end portion supported so as to be rotatable about a second rotation shaft extending along direction Z, and a tip end portion to which the first rotary member is attached.