Based on the heat transfer performances of all equipments the thermodynamic-heat transfer coupling performaces of an air-cooled lithium-bromide absorption refrigerator are researched by means of computer simulation and using F/F as the independent variable. Then reasonable matching ratios of heat transfer areas between those equipments are found. The calculating results show that, for an air-cooled lithium-bromide absorption refrigerator through reasonable matching of the heat transfer areas, the areas of the air-cooled aborber and condenser can be remarkably decreased, the cooling capacity per unit area of the base tube, therefore, is increased by 47 percent and the coefficient of performance of the refrigerator is still approximate to that of the water-cooled unit.