Objective:To explore the effect of ear acupoint pressure pills combined with psychological intervention on the psychological status and quality of life of patients with rectal cancer undergoing chemotherapy, provide the reference for patients with rectal cancer undergoing chemotherapy.Methods:A total of 220 patients with rectal cancer who received chemotherapy in Mianyang Central Hospital from August 2017 to October 2019 were selected as the research subjects. Random number table method was used to divide 220 patients with rectal cancer into observation group (110 cases) and control group (110 cases). Observation group was given ear acupoint pressure pills and psychological intervention, while control group was given psychological intervention only. The Self-rating Anxiety Scale (SAS) and Self-rating Depression Scale (SDS) were used to evaluate mental state; the European Cancer Research and Treatment Organization (EORTC) Quality of Life Questionnaire-Core 30 (QLQ-C30) was used to evaluate the quality of life.Results:There was no significant difference in the score of SAS, SDS and quality of life before intervention between the two groups( P>0.05). The SAS and SDS scores of the observation group after intervention were 46.47±4.00 and 46.33±3.17, which were lower than the control group (52.87±4.02, 51.03±4.18), and the differences were statistically significant ( t values were 11.836, 9.396, P<0.05). After intervention, the scores of physical function, physiological function, psychological function and social function in the observation group were 61.38±7.46,65.28±7.04, 62.20±8.15 and 75.21±9.05, respectively, which were all higher than those in the control group (56.41±6.01, 57.25±4.31, 57.26±7.94 and 64.82±8.40), and the differences were statistically significant ( t values were 4.554 -10.203, P<0.05). Conclusions:Ear acupoint pressure pills combined with psychological intervention can improve the psychological status and quality of life of patients with rectal cancer treated with chemotherapy and improve treatment compliance.