Adhering to monthly breast self-examination is very important for early detection of breast cancer, of course, you must learn the correct self-examination method. The important links of breast self-examination are: careful observation (one look) and careful touch (two looks), it is best to insist on once a month, the time chosen 2~3 days after the end of menstruation, because at this time the breast is very soft, easy to find the problem; menopausal women, can be conveniently, choose any day in January. When touching, use the end palm surface of the finger to slowly pan and gently touch the breasts in order, don’t miss any area, pay special attention to the upper outer part of the breasts and the armpits. Steps of self-examination: 1. Observe your breasts in front of the mirror to see if there are any abnormal changes, and compare them with the last time you examined them. 2. Cross your arms and make your breasts and pectoral muscles loose, and observe carefully. 3. Raise your arms up and repeat the observation as above. 4. Lie on your back on a hard bed, divide your breasts into four parts in your imagination, massage them one by one with your hands and pay attention to whether there are lumps. 5. Place a pillow or bath towel under the left shoulder, place the left hand under the head, stretch the fingers of the right hand close together, massage around the left breast and check around the nipple, paying special attention to the upper area outside the breast and the armpit. 6. Place the left hand down, close to the body, and use the same method to check the upper part of the left breast, from the outer part of the left breast inward to the nipple. 7. Examine the lower and outer part of the breast, from the outer part of the left breast inward to the nipple. 8. Examine between the breast and the armpit with the same posture and flat fingers, and finally examine the left armpit. 9. Repeat the above process for the right breast.