CT examination before breast surgery is done to better diagnose the disease and to know whether there is any abnormal reaction and any metastasis in the site of disease and tissue structure. CT examination is a more advanced imaging technology, during the examination, the body is scanned using X-rays, after which image information will be formed and output. It is possible to observe localized lesions, inflammation, fluid retention, infection, etc. in the body. Breast surgery is generally a treatment for abnormal lumps in the breast, and various tests are required before the surgery, including chest CT, which is performed to observe the patient’s physical condition, evaluate the condition of the breast, and clarify whether the patient has lung diseases and metastatic lesions, so as to anticipate possible risks. It is recommended that patients with breast disease should seek medical attention in a timely manner and actively cooperate with the doctor for various examinations.