Instead of self-checking for breast enlargement, it is more important to know how to perform a breast self-check. A good self-check can not only detect breast enlargement, but also achieve the efficacy of screening for breast lumps and preventing breast cancer. Warm hands gently touch the breast 1, sit straight or lie flat, the whole body relaxed; 2, first touch the breast, and then touch the armpit, with the middle finger and forefinger of the fingertips, in one direction a comprehensive check of the breasts; 3, put your right arm under your head, under the arm of the breast tissue will be moved to the center of the chest, you are closer to the breast tissue and easier to carry out the touch; 4, if your breasts are very large, you need to be in the left side of the shoulder under the pad a If you have large breasts, you will need to place a pillow under your left shoulder; 5. Examine the right breast with your left hand, applying a little pressure when touching. There are many options for touching the breasts 1, concentric circle touch: start by touching the large circle along the outside of the breast, and also use your fingers to draw some small circles around the breast, gradually moving towards the center of the breast until you reach the nipple; 2, radial touch: imagine the breast as a clock in your mind. From the nipple to 12 o’clock to start touching, and then to 1, 2, 3 o’clock to touch, and so on. Until the entire breast are checked; 3, up and down touch: the breast will be imagined as a series of vertical “band” with a finger along each “band” up and down touch. In the process of touching, use your fingers to draw some small circles; 4, check the armpits, along the upper part of the collarbone to look for lumps (enlarged lymph nodes; 5, after the right side of the breast inspection, the left hand under the head, according to the same method with the right hand to check the left side of the breast. No pinching: Remove full body clothing, stand or sit in front of a mirror 1. Front: carefully observe the appearance of each breast, the size, skin color or nipple color changes, the breast is whether there is eczema, or whether there is a bump in the skin, the difference in the height of the two nipples, and whether there is any water coming out of the nipple. 2. Side: Check the upper part of the breast and the armpit for any abnormality. Raise your hands above your head and turn your body to one side to observe the side of the breast repeatedly. Observe the other side in the same way. 3.Re-Frontal：Place both hands smoothly on the buttocks, press firmly to feel the muscles of the chest tense up, and then observe. Lean your upper body forward and continue to look for bumps or wrinkles in the skin, changes in the breast contour or nipple retraction.