First, the frequency of the examination Before understanding the specific examination method, we must first understand the frequency of the examination. I recommend that healthy women perform breast examinations on their own once a month, either in front of a dressing mirror or in the shower. The timing of the examination: As for the timing of the examination, women who are not yet menopausal should choose 7 to 10 days after the end of their menstrual cycle to avoid being disturbed by the enlarged glands and mistaking them for swellings, adding to their troubles. Third, the method of examination: a look: remove the top, see whether the shape of both breasts is symmetrical, whether the bilateral nipples are at the same height, whether the areola has flaking, whether there is nipple overflow, and whether the skin on the surface of the breast has a small depression (we call it the “dimple sign”) or an orange peel-like change (the so-called “orange peel sign”). “Orange peel sign”). If the nipple is lifted, the dimple sign and the orange peel sign, you should be alert to the possibility of breast cancer and go to the hospital for consultation. Second touch: Using the index, middle and ring fingers together, press each part of the breast to check for lumps. Note that it is the pressure, not the grasping or pinching technique, because any normal breast gland, after being grasped and lifted up, can be easily confused with a lump. In addition, the whole breast, nipple, under the areola and armpit should be examined in clockwise or counterclockwise direction to avoid missing an area. Breast tumors that need further diagnosis and treatment are characterized by masses and nodules on palpation, the boundary may be unclear, the surface may not be smooth, and most do not have pressure pain. In addition, as the director of the breast department of Beijing Friendship Hospital, Qu Xiang, often mentions, breast cancer patients can often palpate a “hard core” of the mass. In contrast, hyperplastic glands that do not require special treatment are tough, do not have a “hard core”, are lamellar in shape, have clear borders, and can be painful to the touch, and similar “swellings” often exist symmetrically in both breasts, and worsen before and during menstruation.