本文以新加坡華僑吳深才《帳本》（1912-1948）與其父大埔人吳發祥《日記交易》為中心，探討民國時期新加坡大埔人與原鄉的互動關係。該帳本和日記除了記錄吳深才在新加坡捐資茶陽會館、茶陽勵志社等外，還詳細記錄了每年寄錢寄物回原鄉的次數和數量及水客名字，親人往來新加坡的花銷以及日程記錄，以及捐資原鄉辦學、修橋、作福等活動。對於瞭解民國時期新加坡大埔人與原鄉之間的互動，提供了一個不可多得的具體個案。

Centered on an account book of a Singapore overseas Chinese Wu Shencai(1912-1948) and a trading diary of his father Wu Faxiang, this paper discusses interactive relationships between Singapore Hakka of Dabu County and their home village in China. In addition to the records of Wu Shencai's donation to Char Yong Association and Char Yong Lizhi She in Singapore, the Account Book and Trading Diary record details of the frequency and the amount of money and quantity of goods which were sent back to hometown each year by Wu Shencai, the names of ＂Shuike＂, the cost of travels, and the amount of donation to schools, construction of bridges and ＂Zuofu＂ in the native place. This study provideds a specific case to understand the interaction between Singapore Hakka People of Dabu County and their native place in China during the Republican period.