目的　探讨单侧唇裂鼻畸形的形态特点，为手术治疗提供理论依据。  方法　观察60例单侧唇裂鼻畸形患儿唇鼻部的结构改变特征，测量上唇面积、主要线距变化等。  结果　单侧唇裂患侧人中面积、侧唇面积、唇峰口角距及红唇嵴角均小于健侧（P＜0.05），鼻尖鼻底距和鼻小柱偏斜度Ⅲ度明显大于Ⅱ度（P＜0.05），Ⅲ度唇裂健侧唇裂隙缘唇峰点上移程度大于Ⅱ度，但差异无统计学意义（P＞0.05）。  结论　单侧唇裂唇鼻部在健侧与患侧、Ⅱ度裂与Ⅲ度裂间差异较大，在手术设计中应加以注意。

Objective　To investigate morphological characteristics of unilateral cleft lip nasal deformity，and provide a theoretical basis for the surgery. 　Methods　Structural changes in lip and nose of 60 children with unilateral cleft lip nasal deformity were observed. The upper lip area and the main line were measured and analyzed.　Results　The area of philtrum and lateral lip，the distance from labrum peak to angle of mouth and the angle of vermilion border were less than those of normal side（P＜0.05）; The distance from nasal tip to nasal floor and the columella skewness in cased of Ⅲ degree were larger than that in cases of Ⅱ degree（P＜0.05），as well the labrum peak shift，but the difference was not statistically significant （P＞0.05）.　Conclusions　For cases of unilateral cleft lip nasal deformity, morphological differences between Ⅱ degree  and Ⅲ degree, healthy side and abnormal side are significant, which have to be dealt during surgical treating process.