Patients often experience bone marrow suppression after chemotherapy, which is often referred to clinically as “white blood cell drop”. The drop in white blood cells can easily lead to fever and diarrhea, and even life-threatening electrolyte disorders. So, how do we deal with chemotherapy-induced leukocyte decline? 1.White boosting injection Most chemotherapy drugs have a strong ability to kill white blood cells, which can kill very few white blood cells within a few days, so it is especially important to apply white boosting injection on the basis of close monitoring of blood picture. Some people worry that excessive use of leuke-raising injections will deplete the bone marrow reserve and cause leukemia. In fact, this statement is not scientific, and some studies have found that the leukemia or myelodysplastic syndrome caused by the use of whitening injections is minimal. We should apply leuke-boosting injections scientifically and rationally to help patients successfully complete the established chemotherapy cycles and avoid serious consequences caused by leukocyte deficiency. 2.Oral white-raising drugs and dietary adjustment When the patient has passed the trough of myelosuppression with the help of white-raising injection and the white blood cell level has returned to normal or mildly decreased, the treatment can be consolidated by switching to oral white-raising drugs. At the same time, dietary adjustments can also be made to improve the immune system. Patients can take adequate vitamin supplements and choose more vitamin-rich foods, such as fresh fruits and vegetables, to maintain a balanced nutrition. Nutritious foods such as fish and lean meat, as well as foods rich in protein, iron and vitamins, can be consumed.