The therapeutic drugs for early stage of small cell lung cancer include cisplatin, etoposide, carboplatin, lopatin, cyclophosphamide, vincristine, epothilone, irinotecan and so on. For early stage small cell lung cancer patients, according to the different conditions of each patient, some of them can choose radical surgery to remove the tumor or systemic chemotherapy to control the condition according to the diagnosis and treatment standard of small cell lung cancer. At present, the commonly used chemotherapy regimens for early stage small cell lung cancer mainly include EP (Etoposide combined with cisplatin), CE (Carboplatin combined with Etoposide), CAO (Cyclophosphamide, Epimedicine combined with Vincristine) and so on. Small cell lung cancer chemotherapy often causes bone marrow suppression, gastrointestinal reactions, liver and kidney toxicity and other side effects, therefore, it is necessary to be administered in the hospital by specialized doctors.