Abstract: In order to provide a theoretical basis and technical references for the cultivation of‘Fulongliangyou 863’and breeding technologies of the series of new type rice varieties, aging characteristics of‘Fulongliangyou 863’were studied at late growth stage in this paper. Chlorophyll content, the total SOD activity, MDA content and root bleeding sap of the flag leaf of‘Fulongliangyou863’and‘Liangyoupeijiu’(CK) after heading were analyzed by Meter method, NBT method, thiobarbituric acid method and absorbent cotton adsorption wound flow method. The results showed that: SOD activity gradually decreased and MDA content gradually increased after heading, while chlorophyll content and root exudate increased and reached a peak, then decreased,‘Fulongliangyou 863’and‘Liangyoupeijiu’showed the same results. Further comparison showed that: about 20 days after heading, chlorophyll content, the total SOD activity and root exudate of‘Fulongliangyou 863’were always significantly higher than that of‘Liangyoupeijiu’, while its content of MDA was always lower than that of‘Liangyoupeijiu’. The analysis of each index showed that‘Fulongliangyou 863’was significantly stronger than‘Liangyoupeijiu’.