ABSTRACT The objective of this research is to find out the corelation between comprehension of ecology concept and environmental ethics with student's participation in environmenal conservationt. Research was accomplished in several State Senior High Schools in Bogor in 2012 with randomly with 139 samples. Methods used survey and data analysis technique using correlation regression, Result are: there is a significant correlation between comprehension of ecology concept and students' participation with regression equation of Ŷ = 59.174 + 1.871X1 and correlation coefficient ry1 = 0.4725. There is significant correlation between the ethics and students' participation with a regression Ŷ = 48.116 + 0.491X2 and correlation coefficient ry2 = 0.5453. There is significant correlation between comprehension concept and ethics with students' participation with regression Ŷ = 33.2467 + 0.9654X1 + 0.3954X2 and correlation coefficient ry120.2234. Based on above, it could be conclude that students' participation might be improved through comprehension of ecology concept and environmental ethics.