At present, there are the following methods to check breast lesions: 1, mammography: it has obvious advantages for breast calcification foci, but it is slightly insufficient for the discovery of tiny nodules, especially fatal breast cancer or multi-glandular breast these tiny nodules; 2, breast ultrasound: it has obvious advantages for the cystic lesions of the breast and the blood supply of the breast lesions; 3, breast magnetic resonance imaging: it has obvious advantages for the discovery of small breast nodules, but the cost of examination is relatively high. Breast magnetic resonance examination: it has obvious advantages for discovering small breast nodules, but the examination cost is relatively high. The three types of examination complement each other, and in different cases, different examinations should be chosen for the patient’s condition.