Precautions during chemotherapy for small-cell lung cancer include: paying attention to blood abnormalities, preventing and treating leukopenia and thrombocytopenia; paying attention to treating liver function abnormalities; adjusting lifestyle, taking light and easy-to-digest diets, enhancing nutrition, etc., which can be in accordance with doctor’s instructions. 1. Abnormal blood picture: during chemotherapy for small cell lung cancer, the application of chemotherapeutic drugs may lead to bone marrow suppression, decrease in white blood cell, red blood cell and platelet counts, and even complicate infection, anemia and bleeding, etc. It is necessary to use granulocyte-stimulating factor and other drugs to treat small cell lung cancer in strict compliance with doctors’ advice, and do a good job in personal hygiene and protection to prevent infection and bleeding. 2. Abnormal liver function: chemotherapeutic drugs may damage liver cells and cause liver enzyme abnormality, so it is necessary to follow the doctor’s instructions to use reduced glutathione and other drugs to protect the liver. 3. Lifestyle adjustment: during the treatment period, it is necessary to maintain a healthy lifestyle, have a light and easy-to-digest diet, eat more meat, eggs and milk, fresh fruits and vegetables to enhance nutrition, and pay attention to strengthening protection to avoid infection. Chemotherapy for small cell lung cancer follows the principle of individualized treatment, and each patient’s basic condition is different, so you can ask the attending doctor for specific advice.