With the accelerated pace of life and the existence of various bad habits, the incidence of breast cancer is gradually increasing. Here are some early signs and symptoms of breast cancer. 1. The lump in the breast is hard with unclear border and cannot be easily pushed. Nipple discharge can be red and bloody, yellowish or colorless, but the lump is often not palpable in the breast, and about 15% of them are malignant. 3.Because breast cancer patients often have breast enlargement, a few patients may have different degrees of hidden pain or stabbing pain in the breast. 4. Other changes, such as nipple desquamation, erosion, retraction, asymmetry of both breasts, and mild depression of local skin – the so-called “dimple syndrome”. These are the early signs for early detection and treatment.