Objective We used CT and MRI to observe of hepatic focal nodular hyperplasia, and to improve its diagnostic accuracy with CT and MRI. Methods Pathological confirmed of hepatic focal nodular hyperplasia in 10 cases, reviewed the CT and MRI imaging,and to correlation with pathological. Results 6 cases have live CT scan,4 cases have live MRI scan, all the patients have enhanced.10 lesions were observed. 1 lesions located in left lateral lobe, 3 in left inner lobe, 3 in right anterior lobe, 3 in right posterior lobe. The average diameter is 3.0±1.2cm, range(1.9-4.3cm).6 lesions of CT scan, pre-contrast: 4 of 6 lesions were hypodense, 3 lesions were isodense, 1 lesions have smooth edge, 3 lesions have central scar area. On the arterial phase scans, all lesions were markedly and homogeneously enhanced; On portal venous phase: all of the lesions turned to slightly hyperdense, the central scar area were still hypodense. On delayed phase: the lesions turned to isodense, and the central scar area demonstrated late enhancement. 4 lesions showed slightly low signal in T1-weighted images and isointensity or slightly high intensity in T2-weighted images. All lesions had apparent enhancement in the arterial phase and prolonged enhanced in the portal venous phase and delayed phase. Central scar was found in 2 lesions and demonstrated late enhancement. Conclusion High sensitivity of observations imaging findings of hepatic focal nodular hyperplasia by using CT and MRI. it is of great value in diagnosing and differentiating FNH, and the last confirmed diagnostic need pathological.