If it is a benign 1.5 cm breast nodule, it is usually not serious and regular observation is sufficient, while if it is a malignant nodule, the situation is more serious. Whether a 1.5 cm breast nodule is serious or not should be judged not only by the size of the nodule, but also by the nature of the nodule. When the examination found that the breast 1.5 cm nodule, should be timely to the regular hospital breast surgery or general surgery, through the breast nodule coarse needle aspiration biopsy, clear the nature of the nodule. If the breast nodule is a benign nodule with clear boundary and good mobility, when the size of the nodule is 1.5 centimeters, it can be observed for the time being and does not need surgical treatment. However, regular checkups are needed to observe whether the nodule is growing and whether the growth rate is fast, so as to be alert to the possibility of malignant changes. If the growth rate of breast nodule is fast and the edge of the nodule is adhesive, not easy to push, or even hard nodules, pain and other symptoms, it is necessary to consider the malignant nodule, then we should attach great importance to timely surgical treatment. It is recommended that patients with breast nodules go to regular hospitals for timely consultation, and receive treatment as prescribed by the doctor after clarifying the nature of the nodules.