A magnetic refrigerating device comprising: first and second cylindrical AMR beds each containing refrigerants, the first and second AMR beds being joined at the center of an axis such that they intersect and the refrigerants are movable between the first and second AMR beds via the joint; two magnetic materials that are arranged in each of the first and second AMR beds in a direction of the axis so as to sandwich the joint, the magnetic materials being made of magnetocaloric effect materials; driving devices (93, 94) disposed at both ends of each of the first and second AMR beds, the driving devices (93, 94) expanding and contracting for compression and suction while keeping the volumes of the refrigerants at fixed levels; low-temperature-side heat exchangers disposed at the joint; high-temperature-side heat exchangers disposed at both ends of the first and second AMR beds; at least two permanent magnets facing the respective two magnetic materials in the first or second AMR bed; a rotary shaft that is vertical to the first and second AMR beds provided at the joint; and a rotator that rotates the permanent magnets or the first and second AMR beds about the rotary shaft such that the permanent magnets and the magnetic materials repeatedly get close to and away from each other due to the rotation, wherein when the first AMR bed is close to the permanent magnets, the driving devices at both ends of the second AMR bed performs compression and the driving devices at both ends of the first AMR bed performs suction at the same time, and when the second AMR bed is close to the permanent magnets, the driving devices at both ends of the first AMR bed performs compression and the driving devices at both ends of the second AMR bed performs suction at the same time; through this operation, heat exchange occurs between the magnetic materials and the refrigerants when the refrigerants move in the first and second AMR beds, thus generating a temperature difference between the joint of the first and second AMR beds and each of both ends; and the low-temperature-side heat exchangers and the high-temperature-side heat exchangers respectively take absorbed heat and generated heat outside. first and second cylindrical AMR beds each containing refrigerants, the first and second AMR beds being joined at the center of an axis such that they intersect and the refrigerants are movable between the first and second AMR beds via the joint; two magnetic materials that are arranged in each of the first and second AMR beds in a direction of the axis so as to sandwich the joint, the magnetic materials being made of magnetocaloric effect materials; driving devices (93, 94) disposed at both ends of each of the first and second AMR beds, the driving devices (93, 94) expanding and contracting for compression and suction while keeping the volumes of the refrigerants at fixed levels; low-temperature-side heat exchangers disposed at the joint; high-temperature-side heat exchangers disposed at both ends of the first and second AMR beds; at least two permanent magnets facing the respective two magnetic materials in the first or second AMR bed; a rotary shaft that is vertical to the first and second AMR beds provided at the joint; and a rotator that rotates the permanent magnets or the first and second AMR beds about the rotary shaft such that the permanent magnets and the magnetic materials repeatedly get close to and away from each other due to the rotation, wherein when the first AMR bed is close to the permanent magnets, the driving devices at both ends of the second AMR bed performs compression and the driving devices at both ends of the first AMR bed performs suction at the same time, and when the second AMR bed is close to the permanent magnets, the driving devices at both ends of the first AMR bed performs compression and the driving devices at both ends of the second AMR bed performs suction at the same time; through this operation, heat exchange occurs between the magnetic materials and the refrigerants when the refrigerants move in the first and second AMR beds, thus generating a temperature difference between the joint of the first and second AMR beds and each of both ends; and the low-temperature-side heat exchangers and the high-temperature-side heat exchangers respectively take absorbed heat and generated heat outside.