[Purpose/significance] The aim of making an investigation of the adolescents' needs and utilization is to understand their information literacy so as to arouse the schools and public information services to pay more attention to the training of adolescents' information literacy and to play its role on the improving their information literacy.[Method/process] This paper selects 1000 students from seven high schools in Maoming of Guangdong Province as respondents, makes a survey and analysis on their information needs and utilization by questionnaires, and analyzes the obstacle factors to prevent their information needs and utilization.[Result/conclusion] According to the characteristics of adolescents' information needs and utilization, it suggests that the information technology infrastructure, information quality basic education, library usage education and professional training of teachers and librarians should be strengthened to train adolescents' information awareness, improve the information utilization, in order to improve their information literacy.