In this paper we propose a conceptual framework of youth's responsible sexuality through Sen's Capability approach. Its objects are to define the concept of youth's responsible sexuality, to describe in which analytical framework we use the Capability Approach to conceptualize the youth's responsible sexuality. Precedent works were used to do so and we propose a 3 by 5 table as frame. Horizontaly, we have the social structure: individual level, household level and environmental level. Verticaly we do have resources level, conversion factors level, capabilities level, preferential choices level and accomplisment level.