There is no clear definition of breast nodule, it is a broad concept, most of them are benign lesions, a few are malignant lesions, breast nodule 6mm is not very big. The cause of breast nodules is not clear. They may be caused by infection or damage to the breast, endocrine hormone disorders, genetic mutations, environmental factors, etc., resulting in cancerous or non-cancerous growth of cells in the breast, which in turn leads to the appearance of nodules, which are generally not treated with medication. Benign breast nodules generally do not require surgery. If the nodule grows rapidly, the nodule itself is large enough to affect the appearance and feel of the breast, or has a tendency to become malignant, surgery is the first choice of treatment, if the nodule cannot be differentiated from malignant ones or if it tends to be malignant. It is recommended that women conduct monthly breast self-examination, raise awareness of cancer prevention, seek timely medical treatment for abnormal breast changes, and pay attention to maintaining a healthy body weight, proper exercise, reasonable diet, and reducing the intake of hormones. If breast nodules are diagnosed, standardized treatment should be carried out under the guidance of doctors.