1. Ultrasound diagnosis: It applies B-type ultrasonography to indicate the sizes, shape of tumor and can discover the lesion whose diameter is about 2cm or even less, and it has became the most common and effective method for diagnosing liver cancer;

2. Radioisotopic hepatic scanning: shows enlargement of liver and liver has lost its normal morph. But such scanning can hardly indicate the tumor with diameter less than 3 cm on the films;

3. CT check: CT features high resolution and can detect early liver cancer with tumor’s diameter even being about 1cm;

4. MRI: MRI has high sensitive and can distinguish benign and malignant tumor;

5. Selective celiac or hepatic arteriography: it can indicate out tumor with the diameter even among 0.5-1cm and localize the position of lesion, as well as its sizes, distributions. This is especially valid for small tumor localization of liver cancer.