A laundry treating apparatus includes a cabinet, a drum, a base, a motor, a supply duct, a heat exchange unit, a duct cover, duct sealing unit, and sealing mount part. The base includes the supply duct in fluid communication with the drum, the heat exchange unit provided in the supply duct and including first and second heat exchangers, the duct cover coupled to an upper portion of the supply duct and covering the first and second heat exchangers, the duct sealing unit disposed between the supply duct and the duct cover and configured to block air in the supply duct from leaking, and the sealing mount part provided on a surface of the duct cover and configured to receive the duct sealing unit. The sealing mount part includes first and second sealing mount parts that are in fluid communication with each other and integrally provided as one body.