The method of breast self-examination mainly includes viewing and touching two aspects, but must be skillful in order to get twice the result with half the effort: Step 1, viewing: to see whether their two breasts are symmetrical, whether the color of the skin has changed, whether the nipples are sunken or overflowing. The second step, touch: check whether there is a lump in the breast 1, finger method: touch the palm of the hand should be flat, four fingers together, with the most sensitive index finger, middle finger, ring finger end fingers in order to lightly search the breast; 2, check the scope: outer upper, outer lower, inner lower, inner upper area, and finally the nipple and areola area in the middle of the breast. 3, easy to make mistakes: the examination should not use fingers to grasp and pinch breast tissue, otherwise the grasping and pinching of breast tissue will be mistaken for a lump; 4, easy to neglect parts: because the upper part of the outer part of the breast can be extended to the armpit, the examination can not be ignored; 5, two-handed cooperation: small lumps are not easy to be touched, the examination can be used to hold the breast with the left hand, using the right hand to search. The lump in the lower part of the breast is often covered by the sagging breast, so you can hold up the breast or raise your arm lying down and check with the other hand.