To explore the mineralization processes and characteristics in the buried ancient paddy soil at Liyang plain, the mineralization cumulative amount, the mineralization rate and the mineralization potential of soil organic carbon were studied by the method of the constant temperature sealed culture. The results showed that the mineralization cumulative amount was obviously lower in the buried ancient paddy soil than the present cultivation paddy soils, it was 0.11 mg/g, 0.10 mg/g, 0.10 mg/g, 0.09 mg/g in the cultivation layer, the plow pan, the w...