Birads are a standard for doing color ultrasound breast grading. It is often divided into five grades: 1, grade 0 is the examination is not satisfactory, for example, the breast gland is too thick, need to do molybdenum target examination; 2, one to two is normal benign changes in the breast; 3, grade 3 is the possibility of benign lesions, but do not rule out malignant; 4, grade 4 is inclined to malignant tumors; 5, grade 5 is a high degree of suspicion of malignant tumors in the breast. birads grading if it is more than three grades, you need to do molybdenum target or to do the pathological If the birads are grade 3 or higher, a mammogram or pathology should be done to confirm the presence of malignant breast lesions.