Enhanced CT can be used clinically to determine blood flow and identify hepatic hemangioma from hepatocellular carcinoma. Usually, hepatic hemangioma is fast in and slow out, while hepatocellular carcinoma is fast in and fast out, and the two are not quite the same in terms of signal intensity.1. Hepatic hemangioma: When performing enhanced CT examination, hepatic hemangioma mainly presents as fast in and slow out. When detected, high-density enhancement can be seen at the edge of the lesion, with progressive diffusion of the enhancement to the center of the lesion for a long time. Delayed scanning of the lesion shows isointense filling with an isointense duration of 10-15 minutes. Hemangioma of the liver shows ovoid, hypodense, and well-defined borders with uniform density under CT. If it is a large hepatic hemangioma such as 4cm or more, a lower density area is seen in the center of the tumor foci, which is fissure, star-shaped or irregular-shaped; 2. Hepatocellular carcinoma: When patients with hepatocellular carcinoma undergo enhanced CT scan, the blood flow mainly appears as fast-in and fast-out. After contrast injection, the signal intensity is more obvious and faster than that of hepatic hemangioma enhancement, with longer and uneven dwell time. Through the above different examination features of hepatic hemangioma and hepatocellular carcinoma, it is generally possible to differentiate the two. It is also possible to combine the patient’s clinical symptoms and methemoglobin index for comprehensive analysis, and if necessary, pathological examination by hepatocyte aspiration biopsy can be performed to clarify the diagnosis.