In this study, Yongyou 1540, a wide adaptability indica-japonica hybrid rice with a large area of application in production, was used as the material to study the effects of different seeding rates and seedling raising methods on the seedling quality of indica-japonica hybrid rice, by setting two seedling raising methods of pot seedling and carpet seedling and four seeding rates. The results showed that all seedling quality indexes showed a decreasing trend in general with the increase of seeding rates, whether it was pot seedling or carpet seedling. Under the same seeding rate, the plant height of pot seedling was significantly higher than that of blanket seedling; the germination rate of S4 treatment（8 grains/hole） was significantly lower than that of the carpet seedlings, and there was no significant difference in other seeding rates. At S1 seeding rate（2 grains/hole）, there was no significant difference in leaf age and stem base width among two seedling raising methods, and at other seeding rates, the leaf age and stem base width of pot seedlings was significantly or extremely significantly higher than that of carpet seedlings. The root length, dry weight of aboveground parts and underground parts of two seedling raising methods were significantly different only at low seeding rate, while the root number of two seedling raising methods at the same seeding rate had no significant difference.