Abstract: Objective:To compare the preoperative values of thrombelastography (TEG) in different department of orthopedics patients,analyze the relationship between preoperative TEG and preoperative deep venous thrombosis (DVT),andexplore the necessity of preoperative TEG examination in patients in thedepartment of orthopedics.Method:A total of 266 cases of orthopedics in our hospital from September 2015 to June 2016 were selected.According to the different disease types,the patients were divided into 4 groups as the observation group:arthritis group (60 cases),fracture group (47 cases),necrosis group (79 cases) and lumbar cervical group(80 cases).One hundred healthy subjects were selected as the control group.Recorded the preoperative TEG andmade statistics.Result:The abnormal rates of TEG in the observation group were all rised compared with control group (P<0.05).To compared the average values of preoperative TEG parameter in the observation group with the control group,K value decreased,Angle angle,MA valueand G value rose in arthritis group (P<0.05).R valueand K value decreased,Angle angle,MA value and G value increased in the fracture groupand the necrosis group (P<0.05).The DVT incidenceof arthritis group and fracture group were higher than those of control group,necrosis group and lumbar cervical vertebrae group (P<0.05).The Angle angle,MA value and G value were higher (P<0.05) in the patients with traumatic fractures whose preoperative DVT occured than those inpostoperative DVT.Conclusion:The proportion of high coagulation state was higher in patients with traumatic fractures,osteoarthritis andischemic osteonecrosis before operation.The DVT incidence in perioperative period and the abnormal rate of preoperative TEG were all rise in first two patients.The preoperative TEG detection would be necessary in the three kinds of Department of orthopedics.