Women’s lumbar pain and swelling when menstruating is generally a normal physiological phenomenon, in addition, it is related to abnormal physiological structure, gynecological inflammation, overexertion, etc. 1, normal physiological phenomenon: women’s pelvis is in a physiological state of congestion when menstruating, which may cause symptoms such as lumbar pain and swelling; 2, abnormal physiological structure: for women with a posterior uterus, because the uterus is attached to the rectum near the spine, when menstruating the uterus swells 3, gynecological inflammation: when suffering from gynecological diseases such as pelvic inflammatory disease and adnexitis, women are more likely to experience soreness and swelling during menstruation due to inflammatory stimulation; 4, history of related past diseases: women with multiple childbirths, multiple abortions and other factors, resulting in poor uterine regeneration and other problems, or birth control rings placed for too long, embedded in the uterine cavity, stimulating the uterine wall, can cause lumbago during menstruation; 5, excessive Exertion: Women perform high-intensity labor when they are menstruating, or often bend, lower back and other attritional behaviors, which can aggravate lumbar soreness; 6. Other: Women consume cold, stimulating food, smoke, drink alcohol, or are stimulated by cold when they are menstruating, which can lead to lumbar soreness. When menstrual lumbar pain occurs, it can be relieved by proper rest and massage. When the pain is more serious, you need to consider the possibility of pathological factors, you can promptly go to the hospital gynecology department for physical examination, B-type ultrasound examination, etc. to clarify the cause.