Neutrophils 1.6×10^9/L during chemotherapy may pose some danger and require standardized treatment as prescribed by the doctor. However, the decrease in the index is mild, which is a mild decrease in neutrophils, and the degree of danger is relatively mild. Neutrophils are the cells that carry out the body’s defense, and the use of chemotherapeutic drugs such as cytarabine will trigger bone marrow suppression, causing a decrease in the number of neutrophils, and the decrease in their indexes will easily increase the risk of viral or bacterial infections. Therefore, if neutrophils are always in a low state during chemotherapy, you can follow the doctor’s instructions to use leukocyte-boosting drugs, such as human granulocyte stimulating factor, to promote bone marrow hematopoietic recovery. If neutrophils are low during chemotherapy, please follow the doctor’s instructions for standardized treatment.