Ultrasonographic findings in 34 cases of primary hepatoma, and 18 cases of secondary hepatoma, which had been proved histopathologically or suspected clinically and ultrasonographucally, were viewed. The results were summarized as follows. 1. Among 52 cases, 40 cases were male and 12 cases were femae. The male predominent than the female with the ratio of 4:1 In 52 cases, 40 cases (77%) of the pateints were between 41 years and 60 years. 2. The most common ultrasonographic finding of hepatoma was discrete homogeneous hyperechoic mass. 3. Primary hepatomas were usually solitary and relatively large, while secondary hepatomas were usually mutltiple and relatively small. 4. Hepatitis, liver cirrhsis, and clonorchiasis were more common in primary hepatomas than secondary hepatomas.