前不均倾位是导致难产的重要原因之一，属严重胎头位置异常，一般需剖宫产分娩。前不均倾位早期难以识别，易误诊和漏诊，对母儿危害极大。本文重点阐述经阴道试产中胎儿前不均倾位的临床特点、诊断和处理方法，旨在加强临床医护人员对前不均倾位的认识和重视，防止诊断、处理不及时对母儿造成严重伤害。

Anterior asynclitism presentation, a severe abnormality of fetal head position, is one of the main causes of dystocia and has often been associated with cesarean birth. Anterior asynclitism presentation is difficult to identify in the early stage and is easy to misdiagnose or under diagnose, which further lead to harm the mother and fetus extremely. This paper emphasized on the clinical features, diagnosis and treatment of the anterior asynclitism presentation, which is in order to increase the clinician′s awareness and attention to the anterior asynclitism and prevent serious damage to mother and fetus from failing to diagnose and deal with the disease in time.