He describes his own approach to songwriting as "crafting the lyrics word by word." He often takes one or two years to finish a song. But he is proud that when his songs are sung, listeners can understand every word.
鄭智仁並不多產，他形容自己寫歌是「字斟句酌」，往往一首歌寫一、兩年，但他自豪於即使以演唱的方式，他的歌讓聽者能完全了解歌詞的原意。