The following article has as an objective to reflect on the importance of the category subjectivity, in the theoretical and methodological point of view, for Community Psychology. The intervention in Community Psychology cannot miss the subjective dimension of reality while it is part of the psychological field. In this sense, Social-Historical Psychology, the materialistic historical dialectic method and the subjectivity theory offer important contributions for the analysis of reality and transforming community intervention. The category subjectivity presents an alternative to the idealistic and dualistic visions of subjectivity. Its main features are presented in the article. In conclusion, this project tries to demonstrate how the method and the category subjectivity can offer a theoretical frame to the practice in Community Psychology through the consideration of practical experiences with community groups.