Continuous chemotherapy for small cell lung cancer is useful, and actively cooperating with doctors’ treatment can control the progression of the disease and improve the prognosis. Small cell lung cancer is a kind of lung cancer originated from bronchial mucosa or glands, the condition progresses faster, and metastasis usually occurs when the diagnosis is confirmed, therefore, clinically, the effect of lung cancer surgery for small cell lung cancer is poor, and now radiotherapy combined with chemotherapy is the main treatment plan. Continuous chemotherapy for small cell lung cancer is useful, and the commonly used chemotherapy drugs are etoposide combined with platinum, irinotecan combined with platinum, all of which are the first-line treatment options for small cell lung cancer. If recurrence or progression after chemotherapy, patients can be treated with chemotherapeutic drugs such as topotecan, irinotecan, paclitaxel, etc., which are suitable for small cell lung cancer patients within 3 months of recurrence. Continuous chemotherapy for small cell lung cancer is useful, but due to certain side effects of chemotherapy, such as nausea, vomiting, diarrhea, constipation as well as bone marrow suppression manifestations such as reduction of leukocytes and platelets, therefore, more observation of one’s own condition is required during the medication period, and if the leukocytes or platelets are too low, the number of chemotherapy treatments should be reduced or stopped. Please strictly follow the doctor’s instructions, do not self-medicate.