As the old saying goes, “If you know your enemy and know yourself, you will win a hundred battles. Therefore, a comprehensive and full understanding of the disease is a prerequisite for formulating a reasonable treatment plan. The condition of tumor patients is more complicated, especially those who have been treated with surgery, chemotherapy, radiotherapy, and multiple examinations (such as MRI, PET/CT, CT, tumor markers, etc.), which are characterized by long duration of disease, multiple treatments, and multiple data. On the other hand, patients tend to say only what they think is important information during the consultation, or directly about their current disease condition. The physician has to conduct multiple Q & A sessions with the patient to get a comprehensive understanding of the condition, and this Q & A process sometimes takes 10 minutes or more. In my practice, it often takes a long time to fully understand a patient’s treatment process. To shorten this time and to get a comprehensive, detailed, and consistent understanding of the condition, I recommend that patients do the following homework before coming to the clinic: write a “running account” of the treatment process, that is, a chronological list of each visit For example: Introduction to the treatment process 2011-1-28: Small mass in the upper left lung found on physical examination, no discomfort, no treatment. 2012-4-5: Left chest pain started to appear. 2012-6-28: PET/CT: 1. hypermetabolic occupancy in the upper lobe of the left lung; hypermetabolic left supraclavicular, left hilar and mediastinal multiple lymph nodes; bilateral anterior rib 1, right posterior rib 8 and right iliac bone focal hypermetabolic foci 2012-7-2: Thoracoscopic radical treatment of left upper lung cancer was performed. Pathology report: adenocarcinoma of the left upper lung with multiple mediastinal lymph node metastases; T2N2M0. EGFR test: exon 21 mutation. 2012-8-6 Four courses of chemotherapy with gemcitabine 2g d1, 11+carboplatin 400mg d1 were administered after surgery. The lesions were smaller than before. It is also recommended that the results of all tests (copies) be organized and prepared in chronological order so that the doctor can consult them when needed. This not only saves time, but also does not miss important information.