Hemoglobin 67, which means that the concentration of hemoglobin is 67 g/L, is a moderate level of anemia, and hemoglobin 67 g/L has a certain risk. The specific risk depends on the specific situation of the patient. A patient with simple iron deficiency anemia with a hemoglobin of 67g/L is less risky and can recover quickly with iron supplementation. If hemoglobin 67g/L is caused by acute leukemia or malignant tumors such as multiple myeloma, then in this case, hemoglobin 67g/L is more risky for the patient, and if treatment is not actively given, the condition will further progress and the anemia symptoms will worsen. The patient will also develop concomitant symptoms such as infection and bleeding, often leading to early death. The riskiness of hemoglobin 67g/L is considered in conjunction with the specific etiology that caused the decrease in hemoglobin, in addition to the hemoglobin itself.