Breast examination is a skill that women should have to maintain their health. Although the majority (80%) of breast lumps are benign, by observing changes in the appearance of the breast and touching the breast tissue can be helpful in warning of breast cancer. The frequency of examination is once a month and the time point is 3~5 days after the end of menstruation. If you have stopped menstruating, you can fix one day a month for examination. Through continuous practice and familiarization with breast touch, you can be more sensitive to abnormal breast changes. Step 1: Examine the breasts. In a well-lit, warm room with both upper limbs naturally hanging down, stand in front of a mirror and observe the appearance of the breasts, including the contour, curve, size, skin and nipples. Compare the left and right sides without undue concern for differences in size or shape of the bilateral breasts. Note any broken, wrinkled, sunken or abnormal color of the skin of the breast and any broken, flaking flakes or abnormal nipple orientation. Step 2: Place the palms of both hands on the hips or cross the waist, tense the chest muscles, and continue to examine the lateral portion of the breast by turning from side to side. Step 3: Lean forward, rotate the shoulders and elbows to keep the chest muscles tense. The breasts naturally droop and observe changes in shape and contour. Step 4: Hold your head with both hands up and rotate left and right to observe the lateral part of the breast, noting the border part of the breast that naturally droops and needs to be lifted for observation. Step 5: Check for nipple overflow. Place the index finger and thumb on the tissue around the nipple and pull the nipple root outward to observe any overflow, both sides should be checked. Step 6: Breast palpation. A frequent error in palpation is to pinch or grasp the breast tissue with the fingers. The correct action should be to bring the index, middle and ring fingers together, press slightly harder when touching, and feel the breast lump or thickening with the fingertips. To touch the armpit place one hand on the hip to open the armpit and use the other hand to touch with the fingers. Step 7: Examine the subclavian area using the above technique. Step 8: Drag the ipsilateral hand over the breast and touch the breast tissue with the other hand, forming a rhythm of one up and one down in an inward to outward direction. Step 9: Next, with the body relaxed and lying flat, place the right hand behind the head and place a small pillow or folded towel under the right shoulder. Place the left hand on the upper part of the right breast, with all four fingers together and naturally extended flat to touch the breast. Step 10: Touch sequence. Imagine the breast as a clockwork dial, starting at 12 o’clock and touching clockwise, returning to 12 o’clock at the end. Keep your fingers on the breast as you palpate it, rotate it once and then move your fingers toward the nipple and palpate it again until the entire breast is palpated. Make sure to palpate the upper outer area of the breast extending to the axilla. Step 11: Place the fingertips above the nipple, feel any abnormal changes under the nipple and press lightly on the nipple. Remember to check one side and then the other.