Pelvic pain after childbirth may have the following causes: 1. The process of passing the fetus through the birth canal will cause the ligaments of the pelvis to relax, resulting in pain caused by the separation of the pelvis; 2. During pregnancy, the demand for calcium increases due to the development of the fetus, and if calcium is not supplemented in time, it will lead to osteoporosis in pregnant women and obvious pelvic pain after childbirth; 3. The process of childbirth is stimulated by pain and leads to an increase in muscle tension throughout the body, which can cause an increase in metabolic products that can also cause pain symptoms. Pain symptoms will generally return to normal quickly after proper conditioning and recuperation after childbirth. Therefore, women should properly get out of bed after childbirth, if the pelvic pain is obvious, you can apply hot compresses and massage treatment, you can also use the pelvic belt to pocket the pelvis, can play a pain relief effect.