Abstract: Based on 38 minimum temperature observation data in Zhidan County on May 1, 2022, combined with DEM and apple planting data of Zhidan County, interpolation method of minimum temperature in Zhidan County and influence of temperature on apples were analyzed and studied．Conclusions showed that, in Zhidan County, 3.5%, 2.1% and 11.7% of apples were planted in steep slope, low lying area and north facing unsuitable planting area, which should be adjusted．The minimum temperature on May 1 was the lowest in the river valley, and temperature increased with increase of altitude．Random forest combined with unitary linear regression could reduce fitting error to about 1 °C, and spatial interpolation accuracy reached 30 m．Simulation results of valley temperature were good, but simulation results of mid-slope temperature were poor．Combining spatial distribution of temperature with apple planting data, it was found that about 3.2% of apple orchards were severely affected by low temperature in 2022, which could accurately indicate location, area size and impact degree of apple plots affected by temperature, and has scientific guiding significance for freezing damage warning, impact assessment and post-disaster recovery．