The widening of the hip bone after the birth of a baby is a problem that all mothers have, and the culprit for the widening of the hip bone is a loose pelvis, so the mother should do more exercises for the pelvis to enhance the strength and elasticity of the muscles in the pelvic area. Step one is to sit on the floor, you can fold a blanket behind the hips. Step two is to place the inner palms of your feet opposite each other and spread your knees outward, keeping your heels as close to your pubic area as possible. Step 3 is to lie on your back with your buttocks close to the floor, your lower back under the blanket, and your hands on your sides, palms up and relaxed. Step four is to maintain the upper position, slowly let the left knee outside the ground, relax the body, legs always remain open and tight, the palms of the feet together, slowly let the right knee outside the ground, with this action for repeated practice. In addition to the above, you should also drink more water on weekdays to promote metabolism and avoid high-calorie, high-fat foods.