Objective To investigate the effect of cerebroprotein hydrolysate on the serum high sensitivity C reactive protein (hsCRP), insulin-like growth factor-1 (IGF-1) and interleukin-18 (IL-18) in patients with hypoxic ischemic encephalopathy (HIE) in plateau region. Methods From January, 2013 to May, 2015, 104 cases with neonatal HIE in our department were randomly divided into conventional treat-ment group (n=52) and cerebroprotein hydrolysate group (n=52). Besides, 35 cases of healthy newborn were chosen as the control group. The total effective rate and the serum hsCRP, IGF-1, IL-18 levels were compared. Results The IGF-1 level was lower, and the levels of hsCRP and IL-18 were higher in moderate HIE group and severe HIE group than in the control group and the mild HIE group, respectively (P<0.05). The efficiency rate was significantly higher in the cerebroprotein hydrolysate group than in the conventional treatment group (χ2=8.922, P=0.012). Compared with the conventional treatment group, the IGF-1 level increased, and the levels of hsCRP and IL-18 decreased in the cerebroprotein hydrolysate group (P<0.05). Conclusion Cerebroprotein hydrolysate is effective on patients with HIE in plateau re-gion. The changes of serum hsCRP, IGF-1, and IL-18 levels can be used as auxiliary indexes for early diagnosis of HIE.