Adolescent means a heavy process that takes a lot of adjustment and cause much anxiety. Growth and maturation of the reproductive organs is one of the major problems they face. That is, one in five people in Indonesia are in the range of adolescents. Adolescents feel taboo to talk about sex with parents so that teens seek alternative sources of information. Many teens use the mass media as sources of information.The purpose of this study to determine the relationship of mass media with the use of adolescent reproductive health knowledge among adolescents XI High School class of Darul Ulum Jombang 2011.Survey research design using cross sectional analytic approach. Sampling was stratified random sampling technique. Number of respondents 52 students who met the study criteria. Dependent variable is the level of knowledge and indepent variable is the use of various mass media. The collected data were tested using analysis of Rank Spearman correlation test.The results showed that respondents with the use of a variety of high-mass media 12 people (23.07%), while 33 people (63.46%), low 7 people (13.46%). Respondents with a good knowledge level 5 persons (9.62%), just 41 people (78.84%), approximately 7 people (11.53%). The results of statistical tests is Ï€ = 0.453 with a significance of 0.000 (P <0.005).Conclusion The higher utilization of the various mass media, the higher the level of knowledge of adolescent reproductive health.