《說文解字》所收的地名材料豐富，段玉裁校注《說文》時，凡遇地名字相關材料，必定投人詳細的考證及研究。身為經學家的段玉裁，其地名研究相關之著作亦豐。本文以《說文解字注》在〈邑部〉所見邑名專名之考釋内容為研究範圍，以段氏考釋邑名之方法、體例為研究對象，討論段玉裁校注《說文》邑名之考釋内容。首先，段玉裁以《漢書•地理志》及《後漢書•郡國志》兩本記載漢代地名的文獻為基礎，並與《說文》所見地名互相校證；其次，段玉裁考訂《說文》邑名專名字時，若有其他字形之用例，或者从邑偏旁之專名未見於文獻，但疑即某字之借字者，則一一考訂釐清其歷時及共時關係；最後，再從邑名的文字及釋義材料，校正不符《說文》體例之釋義内容。

There are many geographical places name recorded in “Shuo Wen Jie Zi”, When Duan Yu-Cai annotated the character fonts about geographical places name on "Shuo Wen Jie Zi” he spend a lot of effort to the research. How Duan Yu-Cai to annotated, analyzed and generalized geographical places name on the part of prefix “Yi” in “Shuo Wen Jie Zi” is the focus of this research. Preliminary analysis, first of all, the chapter about Geographical Places Name of “Han-Shu” and “Ho Han Shu”——the history recorded of Han Dynasty, is Duan Yu-Cai’s main reference, and correct “Shuo Wen Jie Zi” with those two books. Second, when the characters of geographical name appear different fonts, Duan Yu-Cai must analyzed its detailed argument and historical context. At last, Duan Yu-Cai correct the stylistic rules and layout of “Shuo Wen Jie Zi” from the analyzed of geographical names.