前不均倾位是较难诊断的一种头位难产，产程中如果0能及时诊断而造成难产，会给母儿带本极大的危害。本文作者分析了45的前不均倾位的产程情况，现报道如下。1临床资料1991年及1月至1998年10月我院分娩总数5911例，前不均倾位45例，占分娩总数的0．76%，产妇年龄21～35岁，初产 The former uneven dumping is more difficult to diagnose a head dystocia, labor process if 0 can cause timely diagnosis of dystocia, will give the mother with a great harm. The author analyzed the 45 cases of uneven delivery before the labor situation, are reported below. 1 Clinical data 1991 and January to October 1998 total number of hospital delivery 5911 cases, the former uneven dumping 45 cases, accounting for 0.76% of the total number of deliveries, maternal age 21 to 35 years old, primiparous