Internal hemorrhoids bleeding, also known as rectal bleeding, is the main clinical manifestation in patients with internal hemorrhoids. In clinical practice, we often see a minority of patients with internal hemorrhoids experiencing long-term chronic bleeding, which can lead to severe anemia. In our clinical practice, the normal hemoglobin level in adults is 120g/L, but some patients are found to have hemoglobin levels of 30-40g/L upon consultation, indicating severe anemia. Therefore, these patients need to receive blood transfusions first, followed by surgical treatment.