Objective To systematically integrate the application experience of decision aids in adult cancer patients, and to provide evidence-based guidance for developing localized decision aids and realizing shared decision making in China. Methods Qualitative studies on the experience of using decision aids in cancer patients were searched in PubMed, Cochrane Library, CINAHL, Embase, Web of Science, ProQuest, CNKI, Wanfang Database, VIP and Chinese biomedical literature database. The search period was from the database inception to July 2023. The quality of the literature was evaluated using the JBI Evidence-based Health Care Center Quality Evaluation Criteria (2020), and the results of the literature were integrated by Meta integration method. Results A total of 17 publications were included, 50 research results were extracted, and 7 categories were summarized. Finally, 3 integrated results were formed: patients′ total satisfaction for decision aids was high; promoting patients′ experience of participation in decision-making;barriers. Conclusion Decision aids can help cancer patients understand treatment options and actively participate in decision-making, meet patients′ decision-making needs, alleviate their decision-making conflicts, and thus improve patients′ clinical outcomes.