Breast nodule with clear boundary is relatively good performance, there is no obvious adhesion with the surrounding, most malignant tumors will infiltrate the surrounding tissues, and the clear boundary is a good differentiation between adhesion and peripheral infiltration, so breast nodule with clear boundary is a relatively good state. However, it is necessary to pay attention to the nature of the nodule, density, growth, as well as blood flow signals and other further judgment, so simple breast nodule border is clear, can not be diagnosed as a benign tumor. Color ultrasound can be followed up and observed for a period of time, and most of the breast nodules found are recommended to take biopsies and send them for pathological examination, or direct surgical excision. The gold standard for diagnosis of breast nodules is biopsy, according to the results of the pathological examination and then guide the next step of treatment, try to go to a regular hospital, detailed examination of the nature of the nodule, if necessary, surgical excision.