Ectinib is the first generation of targeted drug, which is a kind of drug with high specificity for cancer cells, and can kill cancer cells in a targeted way. Patients with stage 1B lung adenocarcinoma do not necessarily need to take ectinib, but also can take gefitinib, ametinib mesylate and other drugs for treatment. Lung adenocarcinoma is a type of lung cancer, and stage 1B represents the early stage of the disease development. Usually, patients in this stage need to undergo surgical treatment, and after the surgery, they need to use drugs such as ectinib and gefitinib to help remove the remaining cancer cells in the body. Patients with stage 1B lung adenocarcinoma do not necessarily need to take Ecketinib, there are other targeted drugs of the same generation, such as Gefitinib, and Alectinib mesylate belongs to the third generation of targeted drugs, which can kill cancer cells, and the specific use of which drug needs to be judged by the doctor according to the patient’s condition. Patients should not change the drug regimen privately, which may lead to the deterioration of the condition, and it is recommended that patients take the drugs according to the doctor’s guidance.