Itchy breasts may be a symptom caused by breast development, which is a normal phenomenon, or it may be a symptom caused by mastitis, breast fibroids and other pathological reasons. Physiological reasons: women’s breasts usually start to develop when they are close to 10 years old, and develop into a mature type in about 3~4 years, at this stage, the breasts may be swollen and itchy, and most of the phenomena are normal phenomena. Pathological reasons: mastitis, cystic breast hyperplasia, breast fibroid and other diseases can appear chest itching phenomenon, while mastitis is often accompanied by breast pain, local redness, swelling and fever and other symptoms, cystic breast hyperplasia people can also be accompanied by breast swelling and pain, breast lumps and other symptoms, and breast fibroid on the surface of the breast can also appear breast lumps. The above pathologic causes can be diagnosed through mammography and pathology biopsy, and early treatment is recommended.