©　2016,　Editorial　Board　of　Journal　of　Xi＇an　Jiaotong　University　(Medical　Sciences).　All　right　reserved.　Objective:　To　summarize　the　clinical　features　of　essential　tremor　(ET)　so　as　to　provide　evidence　for　both　its　clinical　and　differential　diagnosis.　Methods:　All　patients　with　definite　ET　from　the　First　Affiliated　Hospital　of　Xi＇an　Jiaotong　University　from　July　2010　to　February　2013　were　enrolled　in　the　study.　We　collected　all　their　information　including　general　condition,　tremor　type,　tremor　scale　and　tremor　grade.　Results:　There　were　145　ET　patients　enrolled　in　this　study.　The　single　peak　of　onset　age　was　between　the　forties　and　fifties,　with　male　and　female　ones　having　the　same　prevalence.　Tremor　was　the　most　common　in　upper　limbs　(88.96%),　followed　by　head　(39.31%),　lower　limbs　(13.10%),　jaw　and　tongue　(10.34%),　and　trunk　(2.76%).　Tremor　type　was　mainly　isolated　postural　tremor　(63.44%),　followed　by　mixed　type　(35.17%)　and　isolated　action　tremor　(1.39%).　Those　patients　with　upper　limbs　tremor　experienced　much　more　possibility　of　tremor　spreading　to　other　sites.　And　those　with　older　age　of　onset　showed　more　rapid　progression.　There　was　no　difference　in　clinic　features　between　familial　ET　and　sporadic　ET.　Conclusion:　The　onset　anatomic　distribution　and　age　are　related　to　the　progression　of　ET.　Genetic　factor　may　not　be　the　primary　factor　in　the　etiology　of　ET.