Objective:To evaluate the clinical significance of emergency surgical application shock index in patients with severe trauma complicated with hemorrhagic shock and its guiding first aid nursing.Methods:A total of 52 patients from the First Affiliated Hospital, Sun Yat-sen University with severe trauma complicated and hemorrhagic shock were divided into observation group and control group (each group with 26 cases) according to stratified random sampling method. The patients in the control group received the corresponding routine nursing measures, and the observation group carried out evaluating the severity of the condition by shock index based on the corresponding emergency nursing measures. The emergency time, consultation time, prognosis and the nursing satisfaction of the two groups were compared.Results:The emergency time, consultation time were (30.1 ± 3.7), (2.7 ± 0.7) min in the observation group and (39.6 ± 4.2), (3.8 ± 0.9) min in the control group, the differences were statistically significant ( t values were 8.097, 5.149, P<0.01). The cure rate was 73.1%(19/26) and effective rate was 15.4% (4/26) in the observation group, those index was 57.7% (15/26) and 23.1% (6/26) in the control group, the difference was statistically significant ( Z value was 2.969, P<0.01). The high nursing satisfaction was 65.4% (17/26) and nursing satisfaction was 26.9% (7/26) in the observation group, while 30.8% (8/26) and 53.8% (14/26) in the control group, the difference was statistically significant ( Z value was 2.493, P<0.05). Conclusions:Applying shock index to evaluate the corresponding nursing measures can shorten the time of emergency and separate diagnosis, and improve the overall nursing effect of emergency surgery.