A hard lump in the right breast is very common in clinical practice and requires careful identification. Typical lesions, such as fibroadenomas, are smooth to the touch, rounder, painless, and have good mobility, which can be determined by patient self-examination or physician examination. Painless lumps that are hard and have poor mobility are considered malignant, while some cystic lesions are smooth, hard and have fair mobility. It is recommended that patients go to a breast specialist when they find a breast lump, conduct a detailed physical examination and ask for a medical history, and check ultrasound if necessary, which can provide an evaluation of the echogenicity of the lump, its borders, blood flow, etc., and speculate on the level of risk that the lump has reached, as well as do tests such as molybdenum target and breast magnetic resonance imaging. A normal person touching a lump may mistake a normal structure for a lump. It is recommended to visit a breast specialist and seek medical help to make a definitive diagnosis.