Objective:To investigate the correlation between the parameter of early coagulation function and the incidence of delayed cerebral ischemia after subarachnoid hemorrhage and to provide basis of early prediction and intervention for delayed cerebral ischemia in clinical treatment.Methods:The coagulation and TEG of 77 patients with aSAH within 24 hours from onset was analyzed retrospectively and 22 cases of unruptured aneurysms（UIA）were collected as matched group.aSAH patients were divided into the DCI group（38 cases）and No-DCI group（39 cases）to compare the clinical data

coagulogram and parameter of TEG.The multi-factor logistic regression analysis was adopted to determine the risk factors.Results:Compared with those of the No-DCI group

the values of DD

FDP

Fib

α and MA in DCI group were significantly higher（P=0.000

0.000

0.000

0.043

0.042）

while values of R and K were lower（P=0.002

0.036）.The result of multiple-factor analysis shows that the parameter of D-D and K were the independent risk factors.Conclusion:The parameter of D-D

FDP

Fib

α angle

MA is significantly increased

while the parameter of R and K is significantly decreased in aSAH.D-D and K are independent risk factors of DCI.Therefore

early monitoring of coagulation function can help predict the occurrence of DCI

as well as guide the therapies.