Hemocoagulation disorder is recognized to have crucial effects on hemorrhagic or ischemic diseases. Coagulation-related damages secondary to traumatic brain injury are common and severe secondary insults of head trauma and often leads to a poor prognosis. In this study, we sought to assess if posttraumatic hemocoagulation disorders determined using thromboelastography are associated with coagulation-related damages secondary to traumatic brain injury, and evaluate their influence on outcome among patients with head trauma. Based on above results, prediction models or risk scoring systems will be further developed and validated to predict coagulation-related damages secondary to traumatic brain injury.