Color ultrasound of hepatocellular carcinoma is often manifested in periphery, internal echo, blood supply and metastasis of peripheral lymph nodes, etc. The specific expressions are as follows: 1. Peritoneum: liver cancer nodules with a diameter of <3cm are often accompanied by complete peritoneum; when the diameter is >5cm, the peritoneum is still very complete, and its internal echoes are often accompanied by acoustic halos. 2. Internal echo: small hepatocellular carcinoma nodules are mostly hypoechoic; large hepatocellular carcinoma nodules are mostly strongly echogenic or unevenly echogenic; there are liquefied necrotic foci in the central part of the tumor; some tumors have satellite foci in the periphery, and some of them also have thrombosis of the portal vein. 3. Blood supply: due to rich blood supply in liver cancer nodules and their surroundings, the blood vessels in the cancer nodules are trunk-like, colorful dots or colorful inlaid “cluster-like” plaques; the blood flow around the cancer nodules can be in the form of a whole circle or an arc. 4. Peripheral lymph node metastasis: it can be metastasized to hepatic hilar lymph nodes, second hepatic hilar lymph nodes and retroperitoneal lymph nodes, which can be manifested as round or oval hyperechoic foci in the metastatic lymph nodes. Color ultrasound is usually used as a preliminary examination for liver cancer, if liver cancer is suspected, further CT, enhanced CT, PET-CT or even liver puncture is needed, and it is recommended to go to regular hospitals for further diagnosis and treatment.