A wall-mounted washing machine includes a tub and a drying device. The drying device includes a fan coupled to the tub and configured to blow air, a hot air supply duct connected to the fan and configured to supply the air into the tub, a drying heater provided inside the hot air supply duct and configured to heat the air introduced into the hot air supply duct, and a hot air discharge duct connected to the tub and configured to guide the air passing through the tub toward the fan. The hot air discharge duct has a condensing water introduction port through which condensing water is introduced and at least one curved portion is formed on one surface of the hot air discharge duct opposite to the condensing water introduction port.