Many patients want to understand how to be considered as portal hypertension, here I will explain briefly. Clinically, portal hypertension can be diagnosed based on whether the patient has clinical manifestations such as splenomegaly, hypersplenism, vomiting blood or (and black stool), ascites, combined with abdominal ultrasound, CT or MRI MR examinations, and whether esophagogastric fundic varices are detected by gastroscopy. Gastroscopy is a very important tool to assess the severity of the disease, and many patients neglect gastroscopy and review, resulting in the inability to assess the risk of upper gastrointestinal bleeding, when it happens that bleeding from ruptured esophagogastric fundic varices is the greatest threat to the patient. In patients clinically suspected of having portal hypertension without specific clinical symptoms, their hepatic venous pressure gradient can be measured and the diagnosis of portal hypertension is confirmed when the hepatic venous pressure gradient is greater than 5 mm Hg.