目的探讨超声检查应用于胎儿小颌畸形诊断中的临床价值。方法回顾性分析11例胎儿小颌畸形的超声图像特征,并随访临床结果。结果 11例小颌畸形胎儿均经引产或分娩证实。2例属于单发性小颌畸形;9例伴发其他结构畸形和(或)染色体的异常。结论超声检查是诊断小颌畸形的可靠方法,联合应用目测法与测量法可提高诊断准确度,具有重要的临床价值。 Objective To investigate the clinical value of ultrasonography in the diagnosis of fetal small jaw deformity. Methods The echographic features of 11 cases of fetal micrognathia were retrospectively analyzed and the clinical results were followed up. Results 11 cases of mandibular malformation fetus were confirmed by induction or labor. 2 cases were solitary parviomal deformities; 9 cases were associated with other structural deformities and / or chromosomal abnormalities. Conclusion Ultrasonography is a reliable method for the diagnosis of small jaw deformity. Combined with visual inspection and measurement, it can improve diagnostic accuracy and has important clinical value.