Using the combined and the orthogonal experiment union method, the fast thin layer dry temperature, the partition precipitation scope, temper ratio compared to crackle ratio of the rough rice have been studied. The partition dry craft with the guarantee to the dry quality and reduce the craft energy consumption and economical dryer effective duration was proposed, namely the fast dry-preserve or temper-fast dry. Adopting the partition fast combined dry to the high moisture content of rough rice, each section of precipitation scope should be under 8% and the first precipitation moisture content should be at 15.5%～18%. When the grain first dry temperature was 50℃, the precipitation scope respective was 6.3% and tempering was 96 hours. When the second fast dry temperature was 50～55℃, the temper time-gap should be long to 48 hours. When the second dry temperature was at 50℃, the dry temper time-gap may remarkably reduce.