Colorectal cancer is a common malignant tumor in China and even in the world.Its prognosis is not good,and the morbidity and mortality are increasing year by year.Patients with locally advanced colorectal cancer are often treated with chemotherapy.The patients themselves are faced with great psychological problems.The patient's fear,anxiety,depression and other negative emotions are increasing.This does not conducive to disease control,seriously affecting their quality of life.Doctors and nurses should actively explore the way to manage the bad mood of colorectal cancer patients undergoing chemotherapy,so as to provide help for improving the psychological status and tumor prognosis of colorectal cancer patients undergoing chemotherapy.In this study,the emotion management model of colorectal cancer patients treated with chemotherapy at home and abroad is reviewed in order to provide reference for clinical,scientific research and management.