One condition is that the ligaments of the pelvic joints relax under the effect of hormones and the gap between the pubic symphysis widens, causing soreness and pain when the lower limbs move. The other is that the enlarged uterus presses on the pubic symphysis in late pregnancy, causing pain. Both cases are normal and can be relieved by the following methods: 1. When lying on your side, put a pillow under your stomach and a pillow between your two lower legs. Note that the pillow should not be placed between the inner thighs, otherwise it will make the pelvis open more and make the pubic bone area become more painful; 2. When moving in bed or turning over to lie on your side, keep your legs moving parallel to your pelvis. When moving in or out of the car, move the legs as if they were tied together, avoiding the action of keeping the legs apart; 3, when standing, keep both legs bearing the same weight, do not put weight on one leg, and move slowly; 4, you can wear a pelvic belt to fix the pelvis, which helps relieve pubic pain; 5, because pain symptoms may also occur when dressing and undressing while standing, so dressing and undressing is recommended to be done in a chair 5. Because painful symptoms may also occur when dressing and undressing while standing, it is recommended that dressing and undressing be done in a chair, with your legs stretched into your pants before getting up to lift them. In addition, if you do not take care of your vulva during pregnancy and have unclean sex, it may cause pelvic inflammatory disease, cervicitis and vaginitis. In this case, the patient may have vague pain in the lower body, or accompanied by discharge odor, vulva itching and other symptoms, should promptly seek medical advice.