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Rapeseeds drying in a spouted bed with rotating draft tube (RDTSB) was studied to obtain the dryer’s drying characteristics. Taking the heat consumption per kilogram water as the criterion, the 51～88m3/h air flow rate（101.3kPa, 0℃）, 80～110℃ hot air temperature, 10～30kg rapeseed load quantity and 40～80mm distance between draft tube and spouted tube, the drying experiments were tested respectively. On the basis of these test results and the practical conditions, a scheme of orthogonal test with 3 factors and 3 levels was designed. The optimum drying parameters on the present apparatus were normal air flow rate at 58m3/h, hot air temperature at 80℃ and wet rapeseed load at 20kg. The optimum heat consumption per kilogram water was 3941.4kJ and the factor of air flow rate was significant only. By calculating with SPSS, the regression equation of heat consumption per kilogram water against hot air temperature, air flow rate and rapeseed load quantity was obtained.