Objective: The purpose of the study is to analyze the importance of recreational activities carried out in pediatric oncology; their contributions to the treatment and development of children. Methodology: Refers to a bibliographic review of the literature. The research was carried out in October and November 2022, using the LILACS, MEDLINE, BDENF databases, using the descriptors oncology AND pediatrics AND play therapy. In the research, the following inclusion criteria were chosen: articles available in Portuguese and English, and through abstracts that had greater interaction with the objectives, published in the last ten years (2012-2022). Exclusion criteria: duplicate articles that were unrelated to the guiding theme. Results and Discussion: In addition, ludotherapy allows a combination of past experiences with current ones and future plans; due to the development and relationships between children, they share ideas regardless of age; so the act of playing flows a giant imagination and demonstrates their feelings that in some specific way lessens the sadness and possible sequelae, future traumas. In child oncology, care is differentiated by professionals, since when dealing with children, caution and delicacy must be exercised with each procedure performed. Also, the children's audience is vulnerable due to the pathology faced and the transformations resulting from the new phase. Final considerations: Therefore, the importance of recreational activities in child cancer treatment significantly adds to the child's intellectual stimulation, contributes to physical and emotional development. Thus, the hypothesis that ludic activity improves the quality of childhood cancer treatment and reduces the emotional consequences of development was confirmed, observing that treatment alone as a single factor does not transmit progression in its development and adaptation to routine to the child.