Breast nodules hypoechoic category 3 benign nodules are highly probable and cancer cannot be completely excluded. Because according to the grading standard of breast ultrasound nodules, most of the category 3 nodules are benign lesions, which do not need further treatment, and continue to be regularly rechecked every year, but there are still a few breast category 3 nodules that are malignant. While benign tumors usually grow slowly, have clear boundaries, intact perimeters, and no spread or metastasis. They can usually be cured by surgical excision. Therefore, if a hypoechoic category 3 breast nodule is found on breast ultrasound, it needs to be closely monitored. Patients are advised to go to the hospital every 3 to 6 months to review the breast ultrasound examination to observe whether there is any change in the size, morphology and blood supply of the nodule or to confirm it by pathological examination.