Abstract:  Based on historical climate data and frozen (cold) injury data, two years field experiments data (2007/2008, 2008/2009), and typical year data of fruit trees, the low temperature indictors of main fruit trees in south subtropical area were analyzed by using of mathematic statistics and comparative confirmation considering the morphological standard. The light, moderate, severe, most severe frozen 〖JP2〗(cold) injury grades of fruit trees in south subtropical region were determined, in which of longan trees were -1.5～0℃, -2.5～-1.5℃, -3.5～-2.5℃ and <-3.5℃, litchi trees were -2.0～0℃, -3.0～-2.0℃, -4.0～-3.0℃ 〖JP〗and <-4.0℃, and banana trees were 3.0～5.0℃, 1.0～3.0℃, -1.0～1℃ and <-1.0℃ respectively.

Key words: Fruit trees in south subtropical area, Frozen (cold) injury, Indicators of low temperature