This study will enroll colorectal cancer patients with adjuvant chemotherapy about 1 year (estimated 60 patients). Brief fatigue inventory-Taiwanese form (BFI-T) and functional assessment of cancer therapy-general 7 (FACT-G7) will be used to evaluate patients' fatigue and quality of life. Patients will be thoroughly informed about all aspects of the study activity schedule and all regulatory requirements that must be satisfied for informed consent. Only patients who give consent to participate in this study and meet all other inclusion and exclusion criteria will be eligible to enroll into this study. The questionnaire survey will be carried out before first chemotherapy treatment (baseline), and every four chemotherapy cycles (i.e. at cycle 4, 8 and 12) after chemotherapy treatment at outpatient department (OPD) or ward during adjuvant chemotherapy treatment period. All patients will receive standard chemotherapy which continued for 24 weeks (12 cycles) or until disease progression, whichever came first. Subject demographic and disease-related information will also be collected for analysis.