Objective To discuss the imaging features of ultrasonography (US) and MRI (magnetic resonance imaging) for breast encapsulated papillary carcinoma. Methods Retrospective analysis was conducted on the clinicopathologic results and US / MRI imaging findings of 4 IMPC patients pathologically confirmed by our hospital. Results The most common US findings of breast encapsulated papillary carcinoma were lobulation in 3 cases, oval in 1 case, clear border in 3 cases, unclear border in 1 case, uneven internal echoes in all cases, enhanced posterior echoes in 3 cases, unchanged posterior echoes in 1 case, at least 1 blood vessel seen in solid lesions with irregular edge of the solid component. MRI showed lobulation in 3 cases, with clear border in 2 cases and unclear border in 1 case, equal or high signal presented in the solid component by T1WI, slightly high signal presented by T2WI, high signal presented in the encapsulated component by T1WI, high signal presented by T2WI, after enhancement, solid components of the lesions were significantly intensified, TIC presented platform type (2) and outflow type (1), and the edge of solid components was irregular. Conclusion In terms of imaging features of ultrasonography and MRI, the signs are more valuable to the diagnosis of breast encapsulated papillary carcinoma. A comprehensive analysis on the two kinds of imaging examination methods will help to improve its diagnostic accuracy.