Abstract: The aim of this reseach was to observe the effects of E. ulmoides leaves decoction （ELD） on some biochemical indexes in serum of hybrid broilers, including total cholesterol, triglyceride and glucose. 272 one-day-old hybrid broilers were selected and divided into 4 groups randomly. The group Ⅰ was the control group, and the group Ⅱ -Ⅳ were the low, moderate and high dose groups. During the 6-week experimental period, the hybrid broilers in group I had a free access to drink tap water, and the hybrid broilers in groups Ⅱ -Ⅳ had a free access to drink the water added with ELD at 5.0, 10.0 and 15.0 g/L respectively. 8 hybrid broilers were randomly selected in each group and picked the blood from the heart at 2, 4 and 6 weekend respectively, and then the contents of total cholesterol, triglyceride and glucose in serum were determined. The results showed that the contents of total cholesterol and triglyeeride in serum of all the ELD- added groups were significantly decreased than that of the control group （P〈0.05 or P〈0.01） at 2, 4and 6 weekend. Additionally, the contents of total cholesterol in serum became lower with weeks of age increasing. The contents of glucose in serum of the ELD-added groups were significantly lower than that of the control group （P〈0.05 or P〈0.01） at 4 and 6 weeks of age, but there wasn＇t significant difference （P〉0.05） at 2 weeks of age. In conclusion, the results presented in this study show that the contents of total cholesterol, triglyeeride and glucose in serum can he decreased significantly by ELD.