Objective To detect the levels of procalcitonin,blood routine,C-reactive protein of children with bronchopneumonia,to analyze the clinical value combined with the age and to provide the experimental basis for clinical diagnosis and treatment.Methods 100 children with bronchial pneumonia were selected.According to admission number,they were randomly divided into the study group and the control group,50 cases in each group.The control group received routine diagnosis and treatment.The study group was deteced blood calcitonin,blood routine,C-reactive protein level and diagnosed and treated combined with the age.The clinical curative effect,recovery time were observed.The referral rate,children fever,cough,X-ray pulmonary inflammation disappeared time,the average recovery time,and medical expenses were assessed and recorded.Results The cure rate of the study group was 80.0%(40/50),which was higher than 66.6%(33/50) of the control group,the referral rate of the study group was 6.0%(3/50),which was lower than 22.0%(11/50) of the control group,the differences were statistically significant (χ2 =8.61,8.95,all P<0.05).The medical expense of the study group was (3 273.15 ±260.35)yuan,which was lower than (5 426.42 ±238.20)yuan of the control group,the difference was statistically significant (t=11.47,P<0.05).The average recovery time of the fever,cough,X-ray pulmonary inflammation in the study group were (3.29 ± 0.48)d,(5.36 ±0.63) d,(4.17 ±0.57) d,(6.48 ±0.86) d,which were shorter than those of the control group [(4.51 ±0.41)d,(6.70 ±0.52)d,(5.84 ±0.61)d,(7.79 ±0.93)d],the differences were statistically significant (t=8.50,8.69,8.27,9.04,all P<0.05).Conclusion In basic hospitals,detection blood PCT,blood levels of C-reactive protein of children with bronchial pneumonia and combined with the age for diagnosis and treatment, the clinical curative effect is better, the improvement time of the clinical signs or symptoms is shortened, referral rate decreased,medical costs declined.It is worth popularization and application in the basic level hospital.