近年來高中地理科奧林匹亞競賽，已經成為國內地理界的盛事。這項比賽不只提升高中師生對地理科的重視，也提供檢視高中地理教育的機會。地圖是地理教學及研究的重要工具，以往國內地圖教育研究多偏重在國中、小階段，本研究利用第二屆及第四屆地理奧林匹亞競賽的作品，試圖探討高中學生的地圖技能。針對這些作品，本研究就它們的：研究主題、報告中的地圖數量、地圖功能、地圖繪製技能、繪圖工具使用等，分別加以統計與分析。本研究發現將近90％的報告都有使用地圖，顯見學生們認知到地圖的功能。然而，本研究也發現使用地圖最多的情形在於利用地圖呈現研究地區的位置與範圍，屬於較低階的應用，且所使用的地圖有極大的比例是由網路或現有地圖集抓取，顯示學生動手繪製地圖的習慣及能力都有待加強。比較第二屆和第四屆的作品，整體而言地圖技能和工具使用能力有顯著提升，部分原因應來自於地理資訊系統的普及。根據研究發現，本文進一步提出相關建議給主辦單位及高中老師們參考。

The Geographical Olympiad competition has become a major event in Taiwan's geographic society. These events enhance the interest on geography from teachers and students of senior schools. It also provides materials to examine the status of k-12 geographical education. Most previous works that studied map skills mainly focused on elementary and junior-middle education. This research attempts to explore the map skill in the senior education based on the materials presented in the 2nd and 4th Geographical Olympiad Competitions. We analyze the quantities and usage of maps adopted in the research reports provided by each participant group. The results show that most reports use maps to display the location of their study area. However, great proportions of maps were acquired from internet or atlas, instead of drawn by competitors. In general, by comparing the reports between the 2nd and 4th competitions, we found a remarkable advance on participants' map skills within two years. This outcome is partially scribed to the growing popularity of GIS in senior high schools. According to the finding of this research, we provide suggestions fro senior-school teachers and the host institute.