调车场尾部咽喉区优化设计是编组站计算机辅助设计系统的重要组成部分，本文把调车场尾部咽喉分解为尾部进路区和尾部线束区两大部分，并分别对其进行设计，同时介绍了一种由计算机自动识别和提取尾部咽喉区连接关系图中图形信息的方法，使优化计算与图形生成可自动、连续进行 The optimal design of the throat area in the tailing yard is an important part of the computer aided design system of the marshalling yard. In this paper, the tail throat of the yard is decomposed into two parts: the tail approach zone and the tail harness zone, The method of automatically identifying and extracting the graphic information in the connection diagram of the tail throat area by the computer enables the automatic calculation and the graphic generation to be performed automatically and continuously