A breast nodule that is not painful is not necessarily malignant. Benign breast nodules are usually small in size and do not affect the surrounding tissues, in which case they may not be painful, but they are not malignant breast nodules. When a patient develops a malignant breast nodule, the nodule may be hard and have unclear borders. As the size of the breast nodule continues to increase, it may cause pressure on the surrounding tissues, causing the patient to experience symptoms of breast nodule pain, in which case it is likely to be malignant. Breast nodule patients should go to the hospital to do the appropriate examination, rather than simply based on whether the pain to make a judgment, choose the appropriate method of treatment of the disease, to prevent the aggravation of the condition.