The next year, Hsu enrolled in the medical school of Nagoya Imperial University. Not long after the end of the war, he returned to Taiwan to continue his studies as a third-year student at the Medical College of National Taiwan University, taking classes with well-known professors such as Tu Tsung-ming, Tung Ta-cheng, Wei Huo-yao, and Yeh Shu.
隔年，許文政進入名古屋帝國大學醫學部，在兵荒馬亂中開始習醫，終戰不久後又返台進入台大醫學系 3 年級繼續攻讀，由杜聰明、董大成、魏火曜、葉曙等多位知名教授授課。