Patchy abnormal intrahepatic enhancement in the arterial phase usually refers to the discovery of a localized blood-rich mass during liver CT, which may be related to hepatic hemangioma, hepatocellular carcinoma, and metastatic hepatocellular carcinoma. 1. Hepatic hemangioma: Hepatic hemangioma is usually caused by congenital developmental abnormality and hormonal stimulation. 2. Primary liver cancer: primary liver cancer may be related to infection with hepatitis B virus, cirrhosis, aflatoxin and so on, which will cause the above phenomenon. 3. Metastatic liver cancer: if there are malignant tumors in stomach, biliary tract, pancreas, colorectum or ovary, it may cause liver metastasis and result in the symptom. For arterial stage of intrahepatic patchy abnormal intensification, further examination under the guidance of doctor is needed, which is helpful to confirm the diagnosis of the condition for treatment, and it is important not to be negligent so as not to delay or aggravate the condition.