The invention discloses a shape-memory alloy bone fixation plate cooling machine, which comprises a box body, a dual-path diaphragm pump, cooling rings, a controller, an internal circulating chamber, an external circulating chamber, a cooling film cavity, a bone plate film cavity and a cooling chamber, wherein a heat radiation fan and a ventilation shutter are arranged in the cooling chamber; the controller and the dual-path diaphragm pump are arranged between the cooling chamber and the internal and external circulating chambers; the cooling film cavity and the bone plate film cavity are formed in two ends of the dual-path diaphragm pump; the cooling film cavity is arranged between the internal circulating chamber and the cooling chamber; the multiple groups of the annular semiconductor cooling rings are assembled on a pipeline which is provided with a cooling exhaust; a bone plate suction port is formed in one side of the bone plate film cavity; and a bone plate exhaust is formed in the top of the bone plate film cavity. According to the cooling machine disclosed by the invention, the dual-path diaphragm pump and the annular semiconductor cooling rings are used for cooling normal saline, and the normal saline, which is 5 DEG C or below, is supplied through external circulation, so that a shape-memory alloy bone fixation plate is cooled; and the cooling machine is simple in structure, convenient to use and uniform in cooling, and the bone fixation plate can be rapidly removed, so that the operation time is shortened.