現代意義的報紙清末從西方傳入中國，在日益發展的中國報業裡，上海《申報》（1872-1949）堪稱歷史最久發行最廣的一家。因該報深具社會影響力又方便查閱（保存完整並出了影印版），使其成為近代史研究者常用的史料。不過大部分研究者多只引用該報的記載，對報館本身的歷史認識不深；即便略知報史，印象仍停留在它是一份民營報紙，很少知道其終刊前幾年，曾被國民黨接收改組。《申報》會從民營轉為黨報，轉捩點就發生在對日抗戰時期。抗戰爆發不久國軍撤出上海，新聞環境產生巨大變化，報界面臨留在淪陷區還是隨政府撤退的難題。最初《申報》也曾拒絕受檢而遷往漢口、香港發展，但不久即為了市場重回孤島上海營業，至太平洋戰爭爆發被日偽挾持成為漢奸報，抗戰勝利後終被國民黨接收。《申報》是自願成為「漢奸報」嗎？該報在長達八年的抗戰中是如何發展的？與英美租界當局、日本軍方、汪偽政權、中共地下黨、後方國民政府的關係又是怎樣？時局壓力、人事變遷、報館營運如何影響該報言論？都是本文要討論的問題，試圖呈現淪陷上海新聞界的一個面向。

The most significant newspaper enterprise was spread into late Ch'ing Dynasty from the West. Of all China's developing news circles, Shanghai Shun Pao (1842-1949) had the longest History and the most volume of circulation. Due to Shum Pao's impact on society and the merit of easy to look up (have full copy and process plate), it had became the most popular materials used by the modern history research workers. However, most research workers use Shum Pao's catalogue without knowing the newspaper office's history; even if some people knew a little of its history, their impression was only stayed with it is the newspaper that ran by the local people, and not to mention to realize that Shum Pao had been expropriate and reorganize by the Kuomintang before it cease publication. The turning point of Shum Pao from local newspaper to the faction newspaper was took place in the Sino-Japanese War. The Kuomintang's army soon retreated from Shanghai after the war broke out. The press had also faced the dilemma of whether stayed in Shanghai or retreated with the government. Shum Pao also once refused being examined initially, which made them move to Hankow and Hong Kong for further development. Before long, Shum Pao wanted to return to the isolated Shanghai because of its business market. Not until Shum Pao being caught by fake Japanese authority, Shum Pao becomes the enemy state's newspaper during the explosion of Pacific War. However, Shum Pao was taken over by Kuomintang after the victory of Sino-Japanese War eventually. Did Shum Pao become the enemy state's newspaper voluntarily? How did Shum Pao develop during the long eight years in Sino-Japanese War? How about were the relationships among Shum Pao with British American Concession authorities, Japanese military authority, Wang Ching-wei government, Chinese communist party, and Chungking national government? How did the stress of the current events, the transition of the personnel matters, and the operation of the newspaper office affect Shum Pao's comments? These are the problems that will be discussed in this project. There is Shum Pao's newspaper office archives kept in Shanghai Archives. I plan to check them, and try to make the cross analysis in order to reveal an aspect of semi-occupied Shanghai.