Seeds and young ears at meiosis stage of rice variety "Jijing 88" were treated with different wavelength, power and time of laser. Hereditary variation did not appear in seed treatment because the intensity of laser was not enough. Laser treatment to young ears was intensified. As a result, variant appeared in M₁ and M₂ generation on some combination. Frequency of premature variation was the highest, which account for 75% of total variation. Frequency of variation of weight per grain was the second, which account for 67%. Other variations include characteristic of awn, number of grains per panicle, the spikelet density and plant height, which account for 58%, 58%, 50% and 42% respectively.