Objective:To analyze the clinical features of traumatic subdural effusion for chronic subdural hematoma.Method:300 cases of patients with traumatic subdural effusion in our hospital were selected for the study from October 2010 to October 2013,a retrospective analysis of clinical data approach, summarized the clinical features of traumatic subdural effusion for chronic subdural hematoma.Result:Among 300 patients,30 cases evolved into chronic subdural hematoma,accounting for 10.0%.30 patients had a clear history of head injury clear,hematoma patients include:unilateral frontotemporal were 20 cases, accounting for 66.67%,unilateral temporal-parietal were 10 cases,accounting for 33.33%.Effusion into hematoma time:2 to 4 weeks after injury(n=10),5 to 8 weeks(n=15),more than 8 weeks(n=5).Drilling for patients with cranial hematoma drainage treatment achieved good clinical results,25 cases were excellent, accounting for 83.33%,5 cases were effective,accounting for 16.67%,the total effective rate was 100%.Conclusion:Traumatic subdural effusion easily transforme into chronic subdural hematoma,diseased parts mainly unilateral frontotemporal onset mainly within 8 weeks after the injury,need to attract the attention of clinicians.%目的：分析外伤性硬膜下积液演变为慢性硬膜下血肿的临床特点。方法：收集2010年10月-2013年10月笔者所在医院诊治的外伤性硬膜下积液患者300例作为研究对象，采用回顾性的方式分析患者的临床资料，总结外伤性硬膜下积液演变为慢性硬膜下血肿的临床特点。结果：本组300例患者中，30例演变为慢性硬膜下血肿，占10.0%；该30例患者均存在明确的头部外伤史，血肿部位：单侧额颞20例，占66.67%；单侧颞顶10例，占总数的33.33%。积液转变为血肿的时间：伤后2~4周10例，5~8周15例，8周以上5例。对患者实施钻颅血肿引流术治疗后取得了良好的临床效果，其中显效25例，占83.33%，有效5例，占16.67%，总有效率为100%。结论：外伤性硬膜下积液容易转变为慢性硬膜下血肿，发病部位主要是单侧额颞部，发病时间主要是伤后8周以内，需要引起临床医师的注意。
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