Objective To investigate unmet needs during an extended survivorship period among colorectal cancer patients and analyze the influencing factors, aiming to provide evidence for improving health management during survivorship. Methods Using convenience sampling method, 111 colorectal cancer patients who were reexamined at the oncology department, gastrointestinal surgery department, and outpatient clinic were recruited and completed a general information questionnaire, the Short-Form Survivor Unmet Needs Survey （SF-SUNS）, and the Memorial Symptom Assessment Scale （MSAS）. Results The median score of unmet needs of colorectal cancer patients was 34.50 (interquartile range:22.25-54.00) in the extended survivorship period.Regression analysis showed that treatment-related symptoms, nature of work, and treatment regimen were factors affecting unmet needs （all P＜0.05）, explaining 58.5% of the total variance. Conclusion Colorectal cancer patients report a moderate level of unmet needs in the extended survivorship period.Healthcare workers and family caregivers should focus on those with severe treatment-related symptoms, physical workers and those receiving complex treatment regimens, and take effective care measures to meet their needs.