Dishwasher

A dishwasher capable of shortening drying time is disclosed. The present device comprises: a main body having a washing tub provided therein; a door rotatably coupled to the main body so as to open and close the washing tub; a blowing duct having a passage provided between the outside of the washing tub and the inside of the main body so as to provide a flow path through which the air flowing from the outside flows, and a discharge port provided at the passage so as to spray air to the outside; and a blowing means connected to the blowing duct so as to provide the external air into the blowing duct, and forcibly causing wet steam in the washing tub to flow to the front of the main body, wherein the passage has at least one variable section for changing the cross sectional area thereof.