目的　建立自动X线头影测量分析系统 ,简化测量步骤 ,为临床进行头影测量分析提供简便可靠的方法。方法　应用图形、图像处理技术和一定的人工智能 ,用VisualC语言编程 ,采用中值滤波 ,直方图均衡增强图像 ;用Laplacian和Canny进行边缘检测 ;通过对各解剖结构建立模板 ,实现软硬组织轮廓线的自动描绘。结果　本系统能自动提取软组织轮廓线 ,并对软组织标志点进行自动识别和测量分析 ;对下颌骨各标志点、耳点和蝶鞍点都能自动识别 ,并能自动生成硬组织轮廓线。结论　X线颅面影像自动识别分析系统是头影测量更方便、更准确的工具 Objective To establish an automatic X-ray cephalometric analysis system and simplify the measurement procedure, providing a simple and reliable method for clinical cephalometric analysis. Methods Using graphics, image processing techniques and certain artificial intelligence, using VisualC language programming, median filtering, histogram equalization to enhance the image, Laplacian and Canny for edge detection, and the establishment of templates for each anatomical structure to achieve soft and hard tissue contours The automatic depiction of lines. Results The system can automatically extract the outline of soft tissue, and automatically identify and measure the soft tissue landmarks. It can automatically identify each marker, ear and saddle point of the mandible, and can automatically generate the outline of the hard tissue. Conclusion X-ray craniofacial imaging automatic recognition and analysis system is a more convenient and accurate tool for cephalometric measurement