Anemia is usually more severe when the hemoglobin is 81g/L. Hemoglobin of 60~90g/L belongs to moderate anemia, the clinical manifestations of which are dizziness, weakness, fatigue, palpitations (rapid heartbeat, often accompanied by panic), dyspnea and a series of other symptoms, whether at rest or during exercise. It is necessary to carry out a systematic examination of the causes of the lowering of hemoglobin to find out the cause of the disease and carry out the appropriate treatment. 1. If the anemia is caused by iron deficiency or lack of folic acid and vitamin B12, iron (ferrous succinate) or folic acid and vitamin B12 should be supplemented in time, and the anemia symptoms can be relieved. 2. If it is caused by leukemia, aplastic anemia, lymphoma and other malignant diseases, it is relatively difficult to treat, and appropriate treatment plan can be adopted. For example, acute myeloid leukemia is treated with chemotherapy with drugs such as cytarabine, and blood transfusion can be chosen for maintenance if hemoglobin shows a continuous decline and clinical symptoms become severe. 3. In addition, systemic lupus erythematosus (SLE), liver disease, severe infections and other diseases can also lead to anemia, which is still serious and should be actively treated under the guidance of a physician, such as oral prednisone treatment for SLE patients. Reduced hemoglobin, should be identified as soon as possible to identify the cause of the disease, under the guidance of the doctor to carry out targeted treatment.