Self-checking breast position 1, check the breasts in the shower: when taking a shower, the skin surface is moist, the skin is smooth after rubbing soap, which is conducive to the detection of abnormalities, at this time, use the right hand to check the left breast, pay attention to the presence of local thickening or lumps. 2, check the breasts in front of the mirror, choose a brightly lit place when checking, take off the blouse and bra, fully expose both breasts and face the mirror. Check the two upper limbs up, pay attention to whether there is a local bulge, depression and nipple changes in the breast, then cross your arms, forcefully support in the waist and hip, so that the chest muscle tension after checking whether there are changes in the breast, check, pay special attention to whether the two sides of the breast symmetry, for asymmetric changes, should pay great attention. 3, lying on the bed when lying flat to check the breast: lying down flat, if the right side of the breast is checked in the right shoulder back pad a small thin pillow, the right hand pillow under the head so that the breast tissue is more evenly exposed, easy to check. When examining the left breast, use the four fingers of the right hand together, put it flat, gently touch the breast, and check the fingers in a certain direction, in sequence, doing circular movements. 4, the correct examination technique is to use the fingers together to gently touch the breast, not to grasp and pinch, otherwise it is easy to mistake the normal breast tissue for a lump. When touching the palm of the hand should be flat, four fingers together, with the most sensitive index finger, middle finger, ring finger end finger belly in order to gently search the breast. 5. From the outer upper, outer lower, inner lower, inner upper regions of the breast, and finally the nipple and areola area in the middle of the breast, as the outer upper part of the breast can extend to the armpit, the angular protruding part of the breast should not be ignored during the examination. Small lumps are not easily palpable, so the left hand can be used to hold the breast and the right hand can be used to look for them during the examination. The lower part of the lump is often covered by the sagging breast, so the breast can be held up or the arm can be raised lying down, and the other hand can be used to look for the deep lump. Finally, squeeze the nipple, pay attention to the presence of liquid outflow, and then check both sides of the armpit in the same way, pay attention to the presence of enlarged lymph nodes, so that the self-examination of the breast is completed. 6, if there are abnormal findings should be timely to the breast specialist to avoid delays in treatment.