Abstract: Using the quality data of peach （Amygdalus persica Linn.） variety “Xiaochang Xue Peach” from Fengshan Town, Xiaochang County, Hubei Province, and the meteorological data in the same period, the comprehensive contribution of meteorological factors to quality in the critical period and the relationship between climatic quality and fruit quality were analyzed based on literature research and field investigation, the climatic quality evaluation model of “Xiaochang Xue Peach” was constructed, and the model was verified and applied in regionalization. The results showed that the key period of quality formation of “Xiaochang Xue Peach” was from fruit rapid expansion to fruit maturity, and the temperature, light, precipitation and humidity during this period were the main climatic factors affecting its quality. The climate quality indexes were the average temperature, cumulative daily temperature range, sunshine hours in the first three periods of fruit rapid expansion, and the sunshine hours, precipitation and average relative humidity in the first three periods of fruit maturity period. The climate quality index calculated by the model was highly correlated with the fruit comprehensive quality index, and the correlation coefficient was 0.944. The climate quality evaluation results of “Xiaochang Xue Peach” in the main production area from 2011 to 2022 by the model were basically consistent with the comprehensive quality grade of fruits in 11 years, with a proportion of more than 90%. In the division results of the climate quality grade of “Xiaochang Xue Peach” in Xiaochang County in recent 5 years using the model, the area with “excellent” and “super excellent” climate quality in 4 years exceeded 85%.

Key words: peach（Amygdalus persica Linn.）, Xiaochang Xue Peach, climate quality, evaluation model, application of regionalization