Low platelet in chemotherapy for lung cancer can be treated in different ways according to the degree of platelet lowering and bleeding risk. Mild platelet lowering and lower bleeding risk can be treated with oral platelet-boosting drugs such as Ricodin tablets; moderate and severe platelet lowering and higher bleeding risk can be treated with subcutaneous injection of recombinant human thrombopoietin injection to boost platelet, and platelet transfusion can be used for preventing bleeding if necessary. 1. Mild platelet reduction with low risk of bleeding: when the platelet of lung cancer chemotherapy is mildly reduced and the risk of bleeding is low, such as platelet count is (100~50)×109/L, oral drugs such as Ricocoon Tablet and Caffeic Acid Tablet can be applied to elevate platelet therapy under the guidance of doctor, meanwhile, nutrition can be increased to help the organism to recover. 2. Moderate or severe platelet decrease and high risk of bleeding: when the platelet of lung cancer chemotherapy decreases moderately or severely and the risk of bleeding is high, such as when platelet count is less than 50×109/L, platelet-boosting treatment with recombinant human thrombopoietin injection can be applied under the guidance of doctor, and platelet can be infused intravenously to prevent hemorrhagic events if necessary. Patients with low platelet count in chemotherapy for lung cancer are suggested to choose suitable treatment method under the guidance of doctors, and patients are also suggested to pay attention to avoiding bumping and hard food intake to prevent inducing bleeding in skin and digestive tract.