Abstract: Some leaf physiological indexes and above-ground nutrition of Carex thunbergii were compared with the CK after prolonged waterlogging and the restoration situation is discussed. 1) The content of MDA, soluble sugar and proline in leaves were considerably higher than in the CK during the first four phases of restoration but significantly decreased with time and returned to the level of the CK about one month later. 2) The chlorophyll content in leaves was significantly lower than in the CK during the whole restoration phase, but increased with prolonged time. 3) The crude fibre content, SOD, and POD activity did not differ significantly from the CK during the whole restoration process. 4) The crude fat and crude protein contents increased with prolonged time in the whole restoration phase, but had decreased significantly compared with each CK. 5) The above-ground water contents were considerably lower than in the CK during the first four phases of restoration, but decreased with prolonged time, and were restored to the level of the CK about forty days later. This indicates that C. thunbergii has some restoration ability after waterlogging.