Because Taiwan has been occupied by different foreign powers over the past 400 years, there are many loan-words in the Taiwanese daily language. In the last 100 years loan-words have increased and their usage has been the most complex. I tried to use the examples of two authors whose novels were written fifty years apart to investigate the evolution of foreign loan-words. The first author, L?a H?, wrote during the Japanese occupied 1930s and the second author, Wang Chen-ho, wrote during the Chinese KMT government-occupied 1980s. Furthermore, I tried to investigate the effect the “national language policy” of the two colonizing countries has had on the Taiwanese language.