Objective To study the clinical value of sTREM-1, PCT, CRP in sepsis. Methods A prospective study was conducted and clinical data of related patients from January to October 2015 were collected. Thirty-nine cases of sepsis patients , 15 patients with SIRS and 12 normal controls were detected by ELISA then the prognostic value of sTREM-1, PCT, CRP was determined in sepsis. Results In sepsis and SIRS group, sTREM-1 and PCT level were significantly higher than those in control group (P < 0.05); CRP only in sepsis group and control group was statistically significant (P < 0.05). In sepsis group, sTREM-1,PCT and CRP were significantly higher than those in SIRS group (P < 0.05). The ROC curve analysis indicated that sTREM-1,PCT and CRP for SIRS and non SIRS area under the curve was 0.914,0.887 and 0.831 respectively. Conclusion sTREM-1 is a good indicator for early diagnosis of sepsis, and it has high sensitivity and specificity.