A youthful and beautiful, successful female white-collar night lying in bed for breast self-examination found that both breasts have “abnormal lumps”, sleepless nights, as if the end of the world. The next day rushed to a tertiary hospital mammography to find a physician to seek confirmation, the physician a probe said: “all normal”, a false alarm, the original method of her examination is not right. So, how to carry out breast self-examination is the right way? A self-visual check: must be in a brightly lit room, standing in front of the mirror, hands naturally drooping or symmetrical waist support, so that both breasts are fully exposed to their own line of sight. First of all, observe whether the size and shape of both breasts are normal and symmetrical, whether there is any limited elevation or depression, whether there is redness and swelling of the skin, whether there is any expansion of superficial veins, whether the nipples on both sides are at the same level, whether the nipples are inverted and shifted with or without overflow and secretion, and whether there is any vesiculation and ulceration in the areola. Self-examination: self-examination has two positions: ① comfortable lying position, with a cloth pad to elevate the shoulder of the side to be examined; ② natural standing position, will be examined on the side of the upper limb elevated behind the head. The meaning of “touch” is to press and feel, i.e., to press gently and feel carefully. Maneuver: fingers naturally together with the palm of the hand to maintain the same level, with our body’s most sensitive sense of touch the abdomen of the finger (not the fingertips) for probing. More clockwise direction from the outside on the beginning (including armpits and breasts outside on the end) → outside the lower → inside the lower → inside the upper, do not leave any omissions to draw a circle type of searching, the circle of the straight through gradually become smaller, at least more than three circles. Do not use your hands to grasp and pinch action (the aforementioned female white-collar workers is because of the grasp and pinch method, the normal mammary gland gland lobe grasp and pinch into a “hard lump”) 〉 Lightly press touch subcutaneous, deep press touch mammary gland lobe tissue. Squeeze the nipple lightly: observe whether there is any overflow and the nature of the overflow. If you find a breast lump, pay attention to the location, size, texture, hardness, smoothness of the surface, whether the border is clear and smooth, as well as the size of the mobility of the lump. Gently twist the skin on the surface of the lump to determine whether the lump is adherent to the skin. Of course, the wisest choice is to seek medical attention as soon as possible after the discovery of the lump, and to have it handled by a specialist.