To automatically straighten up creases of washing while transporting.

In a finishing method and a device therefor for straightening up creases of washing, washing having creases is attached to a hanger 2, the hanger 2 to which the washing is attached is hung from a hook 7 provided on the chain 4 of a hanger conveyor 3 installed in a casing 1 and transported, air or steam is sent from below the casing 1, the washing is protected by a net 21, the creases of the washing are straightened up by an iron 12 raised and lowered on the casing with a lift 13, and ironed washing is automatically taken out by a discharge member 10 at a transport end 9.