Abstract: To overcome the obstacles of small flexibility of seedling age, low seedling quality and complicated working procedure in traditional seedling raising with moist seedbed of plastic plate, using dry-raised seed coating material seed-coated, studies it in the application effect of plastic-plate wetness-raised seedling. The result indicated that: Seed-coated is able to enlarge the seedling-elasticity of plastic-plate scattered-transplantation seedling, improves the rice seedling quality, simplifies the working procedure of breeding seedling, increases yield of rice. Compared with not coating, the seed-coated can enhance rate of seedlings emergence, abates the damage of damping-off and thrips oryzae Williams, reduces high of seedling, obvious increases in the chlorophyll content, the photosynthesis speed, the tiller number of one seedling, thick of sham stem, total root and root/shoot ratio. The seedling after cutted root is cultivated in the water, its root-developing-speed quickly, root-strip-number manifolded, root long increased, seedling-standing speed earlier 3 days. After scattered-seedling, leaf area index enhance, the dry material accumulates manifolds, the production increase is remarkable, in each different growing period of seedling. The application of dry-raised seed coating can solve problems in traditional seedling raising with moist seedbed of plastic plate, promoting seedling raising techniques.