在中華民國創建迄今的各個階段以及兩岸關係所導致的外交困境下，僑務工作成為政府整體涉外事務不可或缺的一環，透過華僑在居住國的政治及經濟影響力，可發揮「二軌外交」的功能，輔助外交工作之推動。因此僑務駐外工作人員應具備何種能力以成功地扮演好各種角色，確實發揮凝聚海外華僑的向心及爭取支持的功能，確值關注。 針對僑務駐外人員兼具管理者及執行者身分、工作地點位於海外及其業務之特殊性，本研究首先由一般角色理論及管理者角色理論進行探討，其次由一般職能理論及派外人員職能之研究成果進行探討。透過深度訪談、內容分析及參與觀察三種研究方法來分析歸納出僑務駐外人員所扮演之角色功能及應具備之能力。研究發現僑務駐外人員執行任務時需與僑務委員會、駐外館處、華僑文教服務中心、國外組織人民、中國使領館及僑團等對象接觸互動，針對不同的對象及情境分別扮演政府代表、國家主權維護、關係經營、溝通橋樑、訊息傳遞、業務執行、資源整合及管理等8種角色。並需具備社交、語文、溝通、口語表達、管理、領導統御、設計規劃及行銷及適應等8種能力，以成功的扮演各種角色。 此外，本研究亦將如何增進對各種角色之認知及取得或強化各種能力，分別向僑務委會、僑務駐外人員及未來有意成為僑務駐外人員之同仁提出建議，同時也為未來研究提出可行的方向。 / Overseas Chinese affairs has become indispensable to government foreign relating issues in every stage of Republic of China ever since it was established as well as in diplomatic dilemma caused by cross-Strait relation. “Track-Ⅱ Diplomacy” can be done through overseas Chinese’ influence in politic and in economic in the country of residence, also can assist to promote foreign affairs. Therefore, “what kind of capability the overseas affairs working abroad staff need to have and how they play all roles well, attract and win overseas Chinese’ support indeed?” is a good subject worth to pay close attention to. Overseas affairs working abroad staff are manager & executor, who are working abroad with particular mission. This research firstly made from general role theory and managing role theory, then from general function theory and expatriate function theory. Through three research methods – deep interview, information analysis and participant observation – generalize overseas affairs working abroad staff’s roles, functions & capabilities. This research discovered overseas affairs working abroad staff when executing missions need to contact with Overseas Compatriot Affairs Commission, R.O.C. (Taiwan), overseas missionary offices, overseas Chinese cultural service centers, abroad organizations & people, Chinese embassy, overseas compatriot groups, act 8 roles as government representative, national sovereignty safeguard, relationship management, communication bridge, information transmission, business operation, resources integration & management to different subject & circumstance. So they need to have social skill, language, communication, oral expression, management, leadership, plan & design, marketing and accommodation 8 capabilities to play different role successfully. Besides, this research also suggests Overseas Compatriot Affairs Commission, R.O.C. (Taiwan), staff working abroad and colleagues who intend to work abroad in future respectively that they need to find out how to improve recognition of each role and how to strengthen each capability. Bring out workable direction for future further research.