The washing of carpets, to which belong a comparatively stiff bottom structure and a fibre layer fixed to the bottom layer, is troublesome and laborious. The object for the invention is a device for washing of carpets, to which device belong rolls, supported on which the carpet is arranged to be conveyed within the device, to which rolls belong the supporting roll (2) for supporting of the carpet during the washing and a rinsing roll (4), placed at a distance from the supporting roll, for supporting of the carpet during rinsing. To the device belongs a between the supporting roll and the rinsing roll placed washing and rinsing apparatus (6), which is arranged to flush under pressure being detergent on the surface of the carpet located on the supporting roll and scavenging agent on the surface of the carpet located on the rinsing roll.