In this study,germinated seed of rice varieties ‘Jinongda 18’and ‘Jinongda 18’have been treated with three different lasers（He-Ne laser,diode-pumped all solid-state lasers,Nd³⁺ YAG solid-pulse laser） and different treatment time（5 minutes,10 minutes,15 minutes,20 minutes）.The results showed that of the 11 materials of the rice variety ‘Jinongda 18’,phenotypic variation of which treated by the diode-pumped all solid-state lasers for 20 minutes was the most.Heading was 6 days later than the control and plant height was decreased by 7.5 cm.Heading was 6 days later when treated with Nd³⁺ YAG pulsed laser for 20 times.Also in the 11 materials of rice varieties ‘Jinongda 18’,heading was 5 days later than CK when Nd³⁺ YAG solid-pulsed laser treatment was used for 20 times.Heading of 20-minutes treatment was 4 days later than CK when He-Ne laser treatment was used.There were some changes in 5-minute and 10-minute treatment groups,but it was not obvious when He-Ne laser treatment was used.Three treatments did not produce significant changes when diode-pumped all solid-state laser treatment was used.