A transfer system comprising a traveling rail (1) forming a transfer route and a transfer body (3) capable of traveling on a traveling rail along the longitudinal direction of the traveling rail, wherein flexible drive tubes (5) are disposed on the traveling rail along the longitudinal direction of the traveling rail, the transfer body comprises traveling wheels (4) capable of rolling on the traveling rail and drive wheels (2) which receive a rotating drive force from the pressure of a pressure medium supplied to the drive tubes so as to be able to roll on the drive tubes while pressing these tubes, the traveling rail has a plurality of transfer sections and the transfer body can receive a rotating drive force from the drive tubes for each transfer section, and a transfer route change-over switch can be installed between the transfer sections so as to switch the transfer route as necessary.