Bai Xianyong is Taiwan famous contemporary writer living in America. The Evildoer is a long novel of homosexuality as a theme. It tells a story that described a group of homosexuals and“young birds＆quot; engaged in prostitutes industry. For this special populations living in the dark corner ,BAI Xian yong gave a deep sympathy and compassion, he did not render excessively particularity of this groups, but depicted sincere feelings of the ＆quot;youth birds＆quot;around them with the enthusiasm.