Objective To investigate and analyze the nursing service needs of day chemotherapy patients, to provide reference for developing targeted measures to improve nursing service quality and patient satisfaction. Methods Convenience sampling was employed to select 295 day chemotherapy patients as survey subjects from April-May 2024. The Kano questionnaire was used to assess service needs, with Kano model analysis for needs categorization，and the satisfaction-importance matrix and sensitivity values were utilized to calculate the priority order of service needs improvement. Results There were 22 indifferent quality needs, 15 attractive quality needs, 12 must-be quality needs, and 10 one-dimensional quality needs, no reverse quality needs identified among the nursing service needs of day chemotherapy patients. Twelve urgent needs required improvement, with the most critical being assistance in managing symptoms like fever/heat flashes, nausea/vomiting, and shortness of breath. Conclusion Day chemotherapy patients exhibit diverse nursing service needs. Optimizing the medical visit process and providing guidance on adverse reactions can effectively meet these varied needs, thereby enhancing both nursing service quality and patient satisfaction.