Patients with stage 1B lung cancer generally do not need chemotherapy. Patients with stage 1B lung cancer generally have a higher survival rate after surgical treatment with daily maintenance. Lung cancer stage 1B belongs to early stage lung cancer, and the maximum diameter of lung cancer mass is more than 3 cm but less than or equal to 4 cm, which is usually treated by surgical resection, and the survival rate of the patients is higher after surgery, and chemotherapy is usually not needed. However, for some patients with high risk factors such as the presence of poorly differentiated tumors, intra-air cavity dissemination, positive stumps, etc., they can be treated with chemotherapy. Patients with stage 1B lung cancer can be treated by surgical resection, and at the same time, patients should develop a healthy lifestyle, regular exercise and reasonable diet, which are good for the alleviation of the disease. Lung cancer stage 1B belongs to early stage tumor, whether chemotherapy is needed or not needs to be judged by doctors in combination with the condition. After timely and effective treatment, the five-year survival rate of patients with lung cancer stage 1B can reach 60%, and some of the patients can even survive for more than ten years.