Equipment system SV-1.0 for drying litchi by combining convection and radiation method has been designed and manufactured at Department of Agricultural products Processing and Storage, Faculty of Engineering, Hanoi University of Agriculture. This drying system has simple structure and the heat are supplied by combining thermal convection and radiation method. As a result, heat transfer effect was improved. The effect of temperature, drying air velocity, density of material in drying chamber on drying material heterogeneity of dried product and specific fuel consumption was identified. In comparison with common drying systems being used, the drying system SV-1.0 has several advantages: drying time was reduced (70.5 hours), equal to 55.7 percent of manual drying ovens and 94 percent of improved drying equipmen. The heterogeneity of dried product is 2.1 percent, reduced by 2.2 percent in comparison with manual drying oven .and by 1.6 percent with the improved drying equipment. Specific fuel consumption is 0.45kg of coal for 1 kg of dried product, equal to 46.1 percent of manual drying oven and 74 percent of the improved drying equipment. The dried litchi product has good quality with nice shape and colour.