This review focuses on the intersection of two fundamental factors in child development: sensory processing and attachment. The rapid and profound transformations that occur in the brain during childhood influence emotional regulation, self-esteem, and the ability to establish healthy relationships. Following PRISMA guidelines, a systematic review was carried out to explore the relationship between sensory processing and attachment in boys and girls aged 0 to 14 years. The Web of Science, Scopus, Pubmed, and PsycINFO databases were searched using keywords related to attachment theory and sensory processing. Studies were selected from those available through May 2022. Of an initial 87 articles, 17 met the inclusion criteria and provided a variety of perspectives on the relationship between sensory processing and attachment in early childhood. A significant connection was identified between sensory processing disorder and attachment, highlighting the importance of vision in social development and communication, as well as effective parenting strategies, healthy attachment styles, and appropriate sensory processing. The idea that healthy attachment during childhood promotes the development of sensory processing is supported. The usefulness of sensory integration to improve relationships and guide future research and practices in occupational therapy is evident. © 2023 Universidade Federal de Sao Carlos. All rights reserved.