Abstract: A pot experiment of seed dressing with three growth regulators at five dose was conducted in the test, the regulating effects of those growth regulators on seedling growth in wheat were studied to determine the dose of those growth regulators. The main results were as follow: the seed dressing of PP333, seed coating formulation and seed dressing agent could decrease germination energy and improve germination rate. Applying these three growth regulator to the production was safe for regular seedling emergence. And these three growth regulator could increase the initial rate of endosperm consumption, accelerate the translation of endosperm consumption, promote the seed germination and improve the emergence of young seedling. The young seedlings treated with PP333 accelerated the processes of development, shortened the length of leaf, decreased plant height, increased the leaf width, promoted tillers and increased accumulation of dry matter. The appropriate concentration was 1-1.5 g/kg. The seed coating formulation and seed dressing agent accelerated the leaf age, increased tillers and dry matter accumulated and was benefit to cultivating seedling. The treatments had significant effects when the seed coating formulation of 8-10 g/kg and seed dressing agent of 1.5-2 g/kg.