Objective To investigate value of MRI in diagnosing hepatocellular adenoma (HCA). Methods MRI findings of 8 cases with HCA proved by pathology were analyzed retrospectively. All were performed MRI plain and dynamic enhanced. Results ① All lesions were solitary, and round or oval with clear boundaries; There were 5 cases in right lobe, 3 cases in left lobe, and the average diameter was 5.8cm. There are 4 cases with bleeding, 7 cases with enveloped. ② MRI scan: 5 cases showed slightly lower signal and 2 cases with equal signal、1 case slightly higher signal on T1WI of in phase, all signals could be seen reduced on out-phase . 6 cases showed slightly higher signal, 2 cases equal or slightly lower signal on T2WI, 7 cases showed higher signal and 1case with equal signal on DWI. ③ MRI enhancement: There were 6 cases significantly enhanced at arterial phase, continued to strengthen at portal venous phase, 3 cases showed slightly signal and 1 case showed equal signal, 2 cases showed slightly lower signal at delayed phase. 1 case moderately enhanced and 1 case mild enhanced at arterial phase, both continued to strengthen at venous phase, with slightly lower signal at delay period. 7 cases with enveloped and delayed enhanced. Conclusion MRI examination could accurately display the pathological component of HCA, improve the differential diagnosis of liver lesions containing lipids and make a correct preoperatively diagnosis.