This paper is proposed an approach to the freudian notion of preconscious, in order to substantiate theoretical and methodologically the latent level of sociological discourse analysis. Recovering some of the contributions made by sociologists Ángel de Lucas and Alfonso Ortí, the hypothesis of the genesis of collective preconscious and its constitution through language and its social uses is developed. We argue that this social conception of preconscious poses a pertinent and relevant level analysis to sociology, and more speci cally for the sociological analysis of ideologies, establishing a strategy analysis of preconscious contents of ideological discourses. Some key methodological practice-oriented analysis of the latent level of social discourse is presented, online with some schools of discourse analysis.