Bilateral solid breast nodule category 3 refers to a breast bi-rads classification of 3. The main meaning is that the breast nodule has a high probability of being benign and the chance of malignancy is usually <2%. Breast bi-rads classification is a classification method for assessing the degree and risk of benign and malignant breast lesions, and is divided into 0-6 categories, with grade 3 representing a high likelihood of benignity, and the chance of malignancy is generally <2%, and the higher the grade, the higher the likelihood that the lesion will be malignant. In the bi-rads classification, class 3 represents breast nodules that are both benign and malignant lesions. Generally, 98% of class 3 are benign and 2% are malignant, and patients may have symptoms of breast pain, breast lumps or nodules. After discovering bilateral solid breast nodules category 3, patients should promptly go to the hospital for examination and treatment under the guidance of the doctor.