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面部轮廓的对称性是评估人类颜面部美学的一项重要参考指标。重获面部轮廓协调对称是整形美容外科医生努力的目标，为达此目的需术前准确地定性、定量分析面部的轮廓形态，比较双侧面部不对称性，可靠地预测面部变化。定量评估面部轮廓的不对称性首先需要建立可靠的面中线或正中矢状平面(midsagittal plane，MSP)，通过直接人体测量、二维照片测量、头影测量法、计算机断层扫描成像测量法或三维立体成像测量法等技术可获取患者颅面部图像，建立MSP，并可准确评估面部的不对称程度。文章就面部不对称性定量评估方法的研究进展作一综述。“,”The symmetry of facial contours is an important reference for assessing the attractiveness of human face. Restoring facial symmetry is the main goal in the treatment of many craniofacial conditions; therefore, the accurate measurements of symmetry deviation is highly relevant when planning surgical treatment. Quantitative assessment of facial asymmetry first requires the establishment of a reliable midline or midsagittal plane (MSP). Direct anthropometry, two-dimensional photometry, cephalometric, computed tomography imaging or three-dimensional, etc. can be used for qualitative and quantitative evaluate facial asymmetry. The following review summarize the progress of quantitative method for evaluating facial asymmetry, so as to provide some references for surgeons to accurately, qualitatively and quantitatively analyze the facial contour symmetry of patients before surgery.