The main items of breast examination include mammography, breast magnetic resonance, breast ultrasound, breast puncture biopsy and so on. 1. Mammography: to discover breast tumor and identify the nature of tumor through soft X-ray film, mammography can be used for early diagnosis and classification of breast cancer and identification of calcification. 2. Breast magnetic resonance: it is a supplementary examination to breast ultrasound and mammogram, and can be used for tomography and three-dimensional imaging to accurately locate the lesions. 3. Breast color ultrasound: convenient examination, good resolution. In the absence of radiation, small injuries of a few millimeters can be detected. 4. Mammocentesis biopsy: Breast biopsy determines the presence of cancer cells and helps in the early screening of breast cancer. These tests can detect breast lesions and the extent of the lesions. If any abnormality is detected, one should seek prompt medical attention to confirm the condition and treat it as early as possible.