Objective: Value of cytologic method is hight. Material and methods: Petients have been treat the first lung cancer in the Hai Phong Oncological Centre. Results and conclusions: 155 petients have been treat the chemotherapy with diagnosis bronchial carcinoma. That petients has examine the cytologies methods, bronchoscopic byopsy and CT. The cytology of Iympho was value 96,87 percent and 70,42 percent of Trans-thoracic tine needle aspiration cytology, 86,45 percent of CT. The other examins was low value. The technic Trans -thoracic tine needl can skill the every day of oncologists and respiratists.