基隆港市1980年代後期經濟衰退，以及台灣青年面臨崩世代的情境，基隆都市治理失能如同台灣發展的縮影，全球化下艱困的大環境，讓青年世代無法追求「大幸福」而轉向「小確幸生活」，看似微小的幸福，卻也是個體能動性的所在；青年對於國家施政的不滿，透過新媒體串聯，興起2014年318太陽花運動，新世代青年開始展開行動，訴求返鄉或在地紮根，醞釀政治上的第三勢力和青年參政風潮。 2014年基隆老中青三代文史工作者集結，展開C23行動聯盟抗爭運動，訴求保留西二三碼頭倉庫，要求經濟與文化發展並存。而後基隆各青年團體相繼成立，依持他們的秉性、習癖和握有的各類資本，依照旨趣分別關注在政治、文史、新公民運動等面向，將台北的現代性發展、社運精神帶回基隆操練，像是基隆青年陣線的民主小草青年參政的政治實驗；黑鳶之都與基隆青年陣線的許梓桑古厝打掃運動，以行動介入，翻轉地方空間，舉辦梓桑文化祭與「影．響．台．灣」活動；雞籠霧雨則關注地方文史和社會議題，深具批判意識的犀利文筆，持續展開新文史運動；阿普蛙工作室形塑的「新公民運動」，誓言立足基隆，創辦社會企業，走入學校、團體與社區，目標形塑寰宇主義的世界公民，不斷積累社會資本，在都市或台灣各地社區不斷行動，是進行社區(會)場域的改造與復興的「遊戲世代」。 基隆青年的都市改造運動，間接促使2014年民進黨籍林右昌市長的當選，而基隆青年都市改造運動持續與「新政治」的交互影響。最後，本研究認為「世代共融」乃是尋覓理解台灣都市新政治的解藥。 / Since the economy of Keelung city had declined in the latter mid of 1980’s, the youth in Taiwan is now experiencing the situation of the “declined generation”.(崩世代) In 2014, through the connection of new social media, the youth had took the streets and stepped forward defending the importance of local development in Taiwan, which is called “the Sun Flower Movement”. In this study, one can see how the trend of youth participation was formed, and the path of “the third power” in politics to be deliberated. In 2014, the culture workers from every ages in Keelung gathered together for the movement of C23 action, fighting for reservations of the west no.2 and no.3 wharf warehouse and asking for the coexistence between economic and cultural development. And lots of youth people groups have sprung up in Keelung since then, bringing back into Keelung the essence of modern developments and social movements in Taipei. These youth people groups, such as Keelung Youth Front(基隆青年陣線), KeelungRain(雞籠霧雨), and Wa’s up studio(阿普蛙工作室), etc., have different dispositions, habiuts and capitals, and they have divergent interests in political, cultural, new civil movement fields. The youth people group in Keelung give rise to the youth movement of urban renaissance in Keelung, and it also indirectly contributes to the rotation of ruling parties in Keelung. The youth movement of urban renaissance is continuously interacting with the “new politics”. This article considers that “the integration of ages” is the key to understanding the new politics in cities of Taiwan.