The purpose of this research is to analyze and describe the characteristics of reading environment for the teens and their reading behavior in the U.S.A. Some researches and statistics on the reading behavior of young students in the U.S.A., the U.K. and Ireland were examined, and the reading environments for the teens in society and at schools and home were described. The development of school media centers since the 1950s and services for young adults in public libraries in the U.S.A. confirms that government, school, society and home should altogether cooperate in order to help students read more and build better reading environment for the teens.