Abstract: Sunflowers belongs to a kind of crop that is different strains and cross-pollination,it is rate of self-pollination is very low and it is breed intermixes very easily.In the modern africuhural situation , soaking the sunflower seeds has an important effect on improving the rate of sunflower seeds germinating . This paper mainly studys the relationship between waterabsorbing rate,waterabsorbing condition,time of sunflower seeds and the rate of sunflower seeds germinating.The study provides a basis for the high rate of sunflower seeds germinating theoretically and provides the tehnical support for the high-yielding cultivation of sunflower, meanwhile this study has a guiding significance on the production of sunflower.