Abstract: A medium transportation device 2 includes a transportation unit 7 that transports a medium P in a transportation direction A, an edge guide 10 that guides positions of edges Pend of the medium P in a width direction perpendicular to the transportation direction A, and a foreign matter collecting section 13 that collects foreign matters at the edges Pend of the medium P. With this configuration, the medium transportation device 2 can reduce a decrease in transport accuracy of media due to a foreign matter at the edge Pend of the medium in a simple manner.