60min。Using a self-made device of vacuum shelling for chestnut, the research on factors influencing the chestnut vacuum shelling performance was carried out. The results indicated that the size and shape of the chestnut had a significant effect on the vacuum shelling performance. The shelling rate increased with the increase of vacuum. The increase of the vacuum temperature and time, and the preheating chestnut under proper temperature could increase the shelling rate effectively. The optimized technology conditions of the chestnut vacuum shelling were as follows: hemispherical chestnut with the weight ranging from 7.5～10.0g per unit, pre-heating temperature 80℃ and time 40 minutes, vacuum degree 2kPa and shelling temperature 80℃ and time 60 minutes.