To study the clinical practice of procalcitonin and hypersensitive c-reactive protein test in neonatal infection. Two hundred cases of our hospital treatment confirmed infection early newborn children were selected from February 2014 to March 2015. According to the condition, the children were divided into four groups as follows: severe infection group, local infection group, non-infection group and healthy newborns group. At the same time, the new healthy newborns were chosen as control group. The levels of serum procalcitonin and high-sensitivity C-reactive protein were detected in all children and the levels in severe infection group children before and after treatment were also quantitatively detected and the test results were analyzed. There was significant difference in procalcitonin among the four groups (pS<0.05). The positive rate of the high-sensitivity C-reactive protein in local infection group has no significant difference compared with the non-infection group (p>0.05). But there was significant difference between the local infection group and healthy newborn group. As for the severe infection group, both the levels of procalcitonin and positive rate of high-sensitivity C-reactive protein had significant difference compared with the other groups. The detection of procalcitonin and high-sensitivity C-reactive protein could contribute to the diagnose of the early infection neonatal children and has important values in diagnosis and treatment of infectious diseases in the newborns.