This essay examines Mr. Wang Wan-ju’s book collection, analyzing the reading life of young Taiwanese elites during the late Japanese ruled period. Born in 1925 in Taipei city, Mr. Wang is now a doctor of 90. After graduating from Taihoku Second Junior School in 1944, he enrolled in the advanced course of Taihoku High School for the second group of the science class, which, however, was terminated earlier in October 1945 due to the end of World War II. After the war, he got further education in the College of Medicine at Taiwan University from 1946 to 1950. He has practiced his medical career in San-xia area since 1957. As a Japanese colony, Taiwan was once involved in World War II. Afterwards, there were even dramatic changes both in politics and languages toward Taiwanese people when Taiwan was ceded to the R.O.C. It was during this turbulent period that Mr. Wang received his education. The first part of this essay focuses on Mr. Wang’s collection of books, 536 of which were in Japanese and were published in Japan before the war. After an analysis of these books, including the titles, the authors, the publishing dates and the prices, as well as the notes left by Mr. Wang, the following features are found: 1) a great deal of the books belonging to humanities; 2) a majority of the books being translated from European and American works; 3) over 20% of the books being published by Iwanami Books; 4) the books possibly being purchased in Taipei or Japan; 5) Mr. Wang’s keeping great desire for reading even after the war. The second part is based on the memoirs of Taihoku High School graduates, describing how the reading styles of the young elites were built. With the above discussions, this essay attempts to get a glance at the daily life and cultural history of Taiwanese people during Japanese ruled period.