【Abstract】 To summarize the hepatic focal nodular hyperplasia(FNH)of the typical and atypical performance of CEUS, and to evaluate the diagnostic value of CEUS in common benign focal hepatic lesions. .Methods: CEUS was performed on 307 lesions of 205 focal liver lesion cases During June 2014 and March 2016, and the pathological diagnosis were the gold standard, the diagnostic performance of CEUS was evaluated, with emphasis on the enhanced features of CEUS in atypical cases. Results: 161 cases with a total lesion number of 213 were confirm in the 205 cases. Among those, 31 cases with 34 lesions were diagnosed as FNH. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of diagnosing of FNH using CEUS were 91.2% (31/34), 97.8% (175/179), 88.6% (31/35), 98.3% (175/178) and 96.7% (206/213). Three lesions showed malignant enhancement feature that is hyperenhancement during the arterial phase followed by wash out during the portal venous and late phasesS.