The purpose of this article is to reflect on the conceptualizations that arise from the migratory phenomenon and its psychological contribution, starting from the ideas of classical authors, who approach the theoretical approaches to the subject, as well as the contribution of psychology to the migratory phenomenon. It also compiles current information from authors who highlight the need to pay attention both to the existing theoretical work and to the immigrant’s experiences. The reflection was made based on 27 articles that gather the theoretical and psychological aspects of the subject, from a tour of classical authors in the databases of Dialnet, Scielo, and PubMed.