Abstract: The effects of soaked seeds with different concentrations on the growth of maize seedlings were studied. The results were showed as follows. The elongation of leaf blades and leaf sheaths of the treated plants was inhibited at 3~7-leaf stage, and the higher of the concentration, the stronger of the effect. At the same time, as compared to the control, the plant in uniconazole-treatment showed an appearance of high quality plant with increased specific leaf weight, leaf width and stem thickness as well as root number and root length, the root dry weight, and 40mg.kg-1 was the best.