Objective To explore the current status of fear of progression (FOP) level in patients with breast cancer and its influencing factors, and to analyze the relation between psychological resilience, dyadic coping and FOP. Methods A total of 408 patients with breast cancer were selected as the research subjects. The general data inventory, Connor⁃Davidson Resilience Scale (CD⁃RISC), Dyadic Coping Inventory (DCI), and Fear of Progression Questionnaire⁃Short Form (FoP⁃Q⁃SF) were employed to perform investigation. The Pearson correlation analysis method was used to analyze the relation of psychological resilience, dyadic coping with FOP. The factors for influencing FOP in patients with breast cancer were analyzed by using the multivariate linear regression model, and the mediating effect of negatively dyadic coping between psychological resilience and FOP was analyzed by using the Process Bootstrap program. Results The total score of CD⁃RISC among 408 patients with breast cancer was 62.40±16.22, DCI total score was 118.10±21.40, and FoP⁃Q⁃SF total score was 31.89±8.26. There were statistically significant differences in FoP⁃Q⁃SF score between breast cancer patients with different nationalities, residences, educational levels, occupations, per capita monthly household incomes, number of children, medical burden degree, knowledge of disease, main caregivers, and treatment stages (P<0.05). The support coping dimension score, empowerment coping dimension score, and joint coping dimension score of DCI negatively correlated with FoP⁃Q⁃SF social family dimension score, whereas support coping dimension score and joint coping dimension score of DCI negatively correlated with FoP⁃Q⁃SF total score; furthermore, negative coping dimension score, coping quality assessment dimension score and total score of DCI, various dimensions scores and total score of CD⁃RISC negatively correlated with various dimensions scores and total score of FoP⁃Q⁃SF; in additon, various dimensions score and total score of CD⁃RISC positively correlated with various dimensions score and total score of DCI (P<0.05). The results of multivariate linear regression analysis revealed that CD⁃RISC self⁃improvement dimension score, DCI negative coping dimension score, treatment stage, medical burden, main caregivers, and disease knowledge degree were the influencing factors for the total score of FoP⁃Q⁃SF in patients with breast cancer (P<0.05). Psychological resilience could directly affect FOP in patients with breast cancer. Dyadic coping exerted partial mediating effect between psychological resilience and FOP, and its proportion of mediating effect was 13.29%. Conclusion FOP of patients with breast cancer is at a medium level, which is affected by self⁃improvement, negative coping, treatment stage, medical burden, main caregivers and disease knowledge degree. Psychological resilience can directly affect FOP in patients with breast cancer, and can indirectly affect FOP through dyadic coping.