Anemia after chemotherapy is mainly related to chemotherapy drugs. The main raw materials for erythropoiesis are iron, folic acid and vitamin B12, and pemetrexed, which is used in clinical practice, has a relatively large impact on hematopoietic cells. If there is anemia, the treatment mainly includes the following: 1. It is necessary to check the anemia three, that is, whether the blood has enough folic acid, iron and vitamin B12. If the raw materials are more deficient, correspondingly, we may have to supplement the hematopoietic materials; 2. Test the bone marrow hematopoietic function, if the hematocrit is still low three months after chemotherapy, we may need to do bone aspiration to test the bone marrow hematopoietic function. If it is low, you can use erythropoietin-like drugs for treatment; if you have just finished chemotherapy, the bone marrow is still in the suppression period, just wait for the bone marrow to recover. 3, the main thing about food is that you need to choose the food you like to promote its absorption. If there is a lack of raw materials, choose vegetables and foods containing iron or folic acid content accordingly for supplementation, and also choose foods that are suitable for you.