The symptoms of lumbago and abdominal distension during ovulation may be due to normal physiological factors or to pelvic inflammatory disease, which should be treated accordingly after clarifying the cause.1. Normal physiological factors: women are affected by estradiol hormone during ovulation, which causes the pituitary gland to release gonadotropin, leading to follicle cell rupture. After follicle rupture, follicular fluid and a small amount of blood flow into the abdominal cavity, resulting in fluid in the abdominal cavity, under the stimulation of fluid in the abdominal cavity, women may experience symptoms of lumbago and abdominal distension, which is a normal physiological phenomenon and does not require too much intervention; 2, pelvic inflammatory disease or adnexitis: when the patient’s reproductive system is infected with pathogens such as Chlamydia trachomatis and Neisseria gonorrhoeae, symptoms such as persistent abdominal distension and lumbago may occur, and some patients may also Some patients may also have high fever, chills, headache, lack of appetite, etc. Should promptly go to the hospital, clear the cause, can be under the guidance of the doctor according to the etiology of the choice of antibiotics for treatment, if necessary, surgery; 3, endometritis: mainly due to endometrial trauma, bacteria into the trauma caused by infection, during the intermenstrual period can appear lower abdominal pain and lumbosacral pain, intravenous nutrition and hydration, and pay attention to correct electrolyte disorders and acidosis; 4. Urological stones: such as ureteral stones, can be seen as small abdominal swelling and pain and lumbar pain, need to perform urological ultrasound examination to clarify the diagnosis. In addition, women may have abdominal fluid during ovulation, they need to pay special attention to personal hygiene, bathe regularly and change their underwear in time to avoid causing pathogenic infections. Daily relaxation, good work and rest habits, avoid staying up late, and a light diet can appropriately relieve the discomfort.