A sheet-fed scanner includes a housing, a scan assembly carrier, a scan assembly and a bent linking member. The scan assembly carrier is movably disposed in the housing. The scan assembly mounted in the scan assembly carrier scans a side of an original sheet in a main scan direction. The bent linking member disposed between the housing and the scan assembly carrier includes a first section and a second section. The first section extends transversally in relation to the main scan direction and interconnecting two opposed ends of the scan assembly carrier. The second section, connected with the first section, forms an angle with the first section. As one of two opposed ends of the scan assembly carrier is pushed towards the housing in a direction, the bent linking member urges the other end to move in the same direction.