After bone marrow extraction, the human body will lose a certain amount of bone marrow fluid, in which the most important component of the bone marrow fluid is red blood cells, so it is best to eat after the extraction of bone marrow to replenish the elements needed for the production of red blood cells. Therefore, it is best to eat some elements needed to supplement red blood cell production after bone marrow extraction. Because the elements commonly used in red blood cell production include iron, folic acid, vitamin B12 and so on. Foods rich in iron include pig’s blood, sheep’s blood, seaweed, black fungus, shiitake mushrooms, prawns, jujubes and so on. Foods rich in folic acid include fresh fruits and vegetables, and at the same time, when cooking these fresh vegetables, the time should not be too long and the temperature should not be too high. Vitamin B12-rich foods are animal offal, egg yolk, meat, fish, etc. You can also eat appropriate high-quality proteins, such as fresh fish, shrimp, crabs and so on.