Abstract: The hurting rate, catalase(CAT) activities, malondiadehyde(MDA) content, superoxide dismutase(SOD) activities, vitamin C(Vc) content of the Chinese Chestnut stored in the sand were examined in the storage period. The result showed that the hurting rate of the Chinese Chestnut was firstly decreased, then increased, finally decreased; its SOD activities got a slow rise first, then a sharp rise 30 days after its storage; its CAT activities increased rapidly after rising gradually, then decreased; while the MDA content decreased after its increase; its Vc content increased after decreased. In conclusion, the possible reason for rotting of the Chinese Chestnut stored in the sand is the production of oxygenizing substance that leads to the chaos of metabolism in the Chinese Chestnut. Its Vc content and SOD activities are the rotting indexes of the Chinese Chestnut.