A laundry treatment apparatus includes a cabinet, a tub, a drum, a balancer, and a coupling part. The tub defines a tub opening, and the drum includes a body rotatably disposed in the tub and defines a drum opening configured to communicate with the tub opening. The balancer includes a housing having in a ring shape and defining a circulation passage configured to circulate fluid circulate along a circumference of the housing and a housing through-hole configured to communicate with the drum and tub openings. The balancer further includes a fastening part arranged along a circumferential surface of the housing and coupled to the body. The coupling part is disposed at an upper end of the body, coupled to the fastening part along an outer circumferential surface of the fastening part, and curved or bent toward a central of the housing.