Low hemoglobin may have anemia and the cause needs to be clarified. If it is iron deficiency anemia, the patient can eat more iron-rich foods, and if it is megaloblastic anemia, the patient can eat more vegetables and fruits rich in folic acid. Low hemoglobin generally indicates that the patient has anemia, and if it is iron deficiency anemia, some iron-rich foods can be used. Iron-rich foods include eggs, blood, liver, lean meat, fish, shiitake mushrooms, red dates, black fungus, spinach, etc. Moderate consumption is conducive to the correction of iron deficiency anemia. If the patient has megaloblastic anemia, he can consume foods rich in folic acid and vitamin B12. You can consume more vegetables and fruits, such as spinach, apples, lettuce, mushrooms, bananas, strawberries, peaches, oranges, beef, lamb, dairy products, soy products and so on. It should be noted that although food can improve anemia by replenishing the nutrients needed by the body, food is not a substitute for medication for treatment, and if the anemia is more serious, patients are advised to take treatment under the guidance of a doctor.