ObjectiveTo observe the effect of psychological behavior intervention on anticipatory nausea and vomiting (ANV) of breast cancer patients undergoing chemotherapy. MethodsA total of 185 patients receiving chemotherapy between 2012 and 2013 were randomly divided into psychological behavior intervention group (study group) and conventional nursing group (control group). ANV classification standard and hospital anxiety and depression scale were used to evaluate the degree of ANV in the subjects. ResultsGeneral information of the two groups had no difference (P＞ 0.05) and showed good comparability. Both the incidence and degree of ANV in the study group were significantly less than those of control group (P＜ 0.01) . Moreover, the incidence of anxiety and depression showed significant difference between the two groups (P＜ 0.05) . ConclusionPsychological behavior intervention is an effective method to improve the treatment adherences and life quality of ANV patients undergoing chemotherapy.