Ferritin refers to the body’s storage ferritin and indicates the level of stored iron. Causes of excessively high ferritin include malignant diseases such as cachexia, excessive iron loading, and some non-iron deficiency anemias, among other causes. 1. Malignant diseases: for example, patients with liver cancer, because liver cancer cells can synthesize and secrete ferritin or isoferritin, liver cancer tissues will affect the clearance of ferritin, resulting in increased ferritin in the body. Leukemia patients will lose part of the ability to remove ferritin, while cancer cells increase the ability to synthesize ferritin. 2. Excessive iron load: seen in primary hemochromatosis, iron granulocytic anemia, repeated blood transfusion, ineffective hematopoiesis, etc., serum ferritin is significantly increased; 3. Some non-iron deficiency anemia, such as tumor or infection-related anemia, anemia with impaired bead protein production, etc., serum ferritin may be normal or increased; Excessive ferritin is recommended to go to the hospital in time, and choose the appropriate drug treatment after clarifying the cause of the disease.