Abstract: In this paper ornamental sweetpotato with different leaf was used as the main test material to study the relationship between inorganic nutrients and the growth of hydroponic culture.it has discussed the best experiment nutrition, all the researches may provide some academic and technical supports for ornamental sweetpotato when it applies in landscape and indoor garden. The results were as follows: the content of Chl and the growth had significant differences with others by treating with 1/2 times lettuce circulating experiment nutrition, kept the pH 6.5~7.0 and EC 2.51~2.66. It can achieve the best viewing and bring life to the garden in that condition.