Malignant breast nodules 1cm are more serious and need to start treatment as early as possible. Benign breast nodules 1cm are not serious and can be temporarily reviewed regularly or surgically removed. In the case of malignant 1cm breast nodules, the situation is usually more serious, as malignant tumors have the risk of threatening the patient’s survival. Malignant breast nodules usually also require a combination of treatments, mainly surgery. After surgery, adjuvant endocrine therapy, chemotherapy, immunotherapy, targeted therapy, etc. are also required, along with regular follow-up, so malignant nodules are relatively more serious. If it is a benign 1-centimeter breast nodule, generally speaking, it is not serious and can be regularly reviewed or surgically removed. Surgery can be either traditional or minimally invasive. It is recommended that patients with breast nodules go to a regular hospital to receive treatment as prescribed by the doctor after the nature of the nodule has been clarified, so as to avoid delays in their condition.