Pale nose color is one of the symptoms of anemia. Anemia is a pathological condition in which the amount of hemoglobin, red blood cell count and red blood cell pressure volume per unit volume of circulating blood is lower than normal. To prevent pale nose color due to anemia, it is important to first provide sufficient blood-forming substances for the bone marrow. Iron is the main raw material for the production of hemoglobin. Infants and young children need more iron to accommodate their growth and development. Consciously give your baby more iron-rich foods, such as lean meat, pork liver, egg yolk and kelp, hairy vegetables, nori, fungus, ragi, beans, etc. Pay attention to the reasonable coordination of diet, such as appropriate to eat some fruit after meals, fruit is rich in vitamin C and fruit acids, can promote the absorption of iron. And drink strong tea after the meal, because iron and tea tannic acid combined to generate precipitation, affecting the absorption of iron. And cooking food in an iron pot is very beneficial to prevent anemia. Folic acid and vitamin B (12) are also indispensable substances for blood production. Fresh green vegetables, fruits, melons, beans and meat are rich in folic acid; meat and liver, kidney, heart and other offal are rich in vitamin B (12), but after cooking at high temperature, more than 50% of folic acid and 10-30% of vitamin B (12) can be destroyed. Therefore, it is important to pay attention to dietary diversity, but also to pay attention to cooking techniques, try to avoid excessive steaming food. It is also important to protect the “blood production plant”. Many chemical and physical factors can damage the bone marrow. Chemical factors such as benzene, organic arsenic, certain antibiotics (e.g. chloramphenicol, streptomycin), sulfonamides, anti-epileptic drugs, etc.; physical factors such as X-rays, gamma rays, etc., can damage the bone marrow, which is the enemy of hematopoiesis. Therefore, drugs harmful to hematopoiesis should not be abused, and unnecessary X-ray exposure and exposure to harmful substances should be avoided.