Breast cancer can be detected by self-examination and auxiliary breast examination in the hospital. 1. Self-examination can be done by gently touching the breasts with fingers to find out whether there are breast nodules or lumps, and if nodules or lumps are found, it is necessary to go to the hospital for consultation. 2. Hospital examination, including breast ultrasound, mammography, and breast MRI. If the breast nodule is found to have malignant tendency through imaging, it is necessary to carry out puncture biopsy of the nodule to determine the type of pathology. Breast cancer is a relatively common malignant tumor in women, and its incidence in women is increasing year by year, and there is a trend of youth. It is recommended to consult the hospital in time for breast discomfort and standardized examination.