Abstract: Photosynthetic characteristics from different rice varieties such as ‘Jinyou458’, ‘Jinyou463’, ‘Liangyou287’, ‘Zhuliangyou211’, ‘Hesheng10’ and ‘Ganxin688’, ‘Yueyou712’, ‘Liangyoupeijiu’, ‘Xinrongyou254’, ‘Ganwanxian37’ were measured. The results indicated that the light compensation point was 25.7-35.7 μmol/(m²·s) of early rice, 29.5-35.3 μmol/(m²·s) of late rice; the apparent quantum yield was 0.0401-0.0481 of early rice, 0.0387-0.0503 of late rice; the dark respiration was 1.0879-1.7975 μmol/(m²·s) of early rice, 1.2778-1.6051 μmol/(m²·s) of late rice; the CO₂ compensation point was 66.6-75.4 μmol/(m²·s) of early rice, 75.6-87.6 μmol/(m²·s) of late rice; the carboxylation efficiency was 0.0594-0.1089 of early rice, 0.0547-0.0764 of late rice; dark respiration, light compensation point, apparent quantum yield, CO₂ compensation point and carboxylation efficiency of single leaf from different rice varieties had no significant difference.