A laundry treatment apparatus, comprising: a cabinet having a laundry opening; a laundry receiving device provided in the cabinet and configured to receive laundry therein through the laundry opening and having a cylindrical shape; a circulation passage (41, 43, 47) that circulates air through the laundry receiving device, including a suction duct that guides interior air from the laundry receiving device into the circulation passage (41, 43, 47), a discharge duct that discharges air from the circulation passage (41, 43, 47) back into the laundry receiving device, and a connection duct connecting the suction duct and the discharge duct, wherein the circulation passage (41, 43, 47) is fixed to an upper portion of a circumferential surface of the laundry receiving device and extends in a diagonal direction across the upper portion of the laundry receiving device; a heat exchanger that is provided in the connection duct, including an evaporator to dehumidify air and a condenser to heat air received from the evaporator and a compressor provided at an outside of the connection duct and connected to the evaporator and the condenser by a refrigerant pipe; and a blower provided between the heat exchanger and the discharge duct to circulate the interior air of the laundry receiving device through the circulation passage (41, 43, 47), wherein the evaporator and the condenser are provided in the circulation passage (41, 43, 47) sequentially in circumferential direction of the laundry receiving device, and the compressor is provided above the laundry receiving device, in a space between the circulation passage (41, 43, 47) and the cabinet; and wherein a height of the connection duct from a top of the connection duct with regard to an installation space of the evaporator is less than a height of the connection duct from said top of the connection duct with regard to an installation space of the condenser. a cabinet having a laundry opening; a laundry receiving device provided in the cabinet and configured to receive laundry therein through the laundry opening and having a cylindrical shape; a circulation passage (41, 43, 47) that circulates air through the laundry receiving device, including a suction duct that guides interior air from the laundry receiving device into the circulation passage (41, 43, 47), a discharge duct that discharges air from the circulation passage (41, 43, 47) back into the laundry receiving device, and a connection duct connecting the suction duct and the discharge duct, wherein the circulation passage (41, 43, 47) is fixed to an upper portion of a circumferential surface of the laundry receiving device and extends in a diagonal direction across the upper portion of the laundry receiving device; a heat exchanger that is provided in the connection duct, including an evaporator to dehumidify air and a condenser to heat air received from the evaporator and a compressor provided at an outside of the connection duct and connected to the evaporator and the condenser by a refrigerant pipe; and a blower provided between the heat exchanger and the discharge duct to circulate the interior air of the laundry receiving device through the circulation passage (41, 43, 47), wherein the evaporator and the condenser are provided in the circulation passage (41, 43, 47) sequentially in circumferential direction of the laundry receiving device, and the compressor is provided above the laundry receiving device, in a space between the circulation passage (41, 43, 47) and the cabinet; and wherein a height of the connection duct from a top of the connection duct with regard to an installation space of the evaporator is less than a height of the connection duct from said top of the connection duct with regard to an installation space of the condenser.