Pins and needles pain in the left side of the abdomen is considered more likely to be peritonitis, which is most commonly caused by pelvic inflammatory disease or infection of the left adnexa in female patients. There will be a sensation of lower abdominal swelling and pain in urination, or urinary frequency, urinary urgency and blood in urination and other symptoms. Laboratory findings of urinary tract infection manifestations, while abdominal ultrasound will further clarify the diagnosis, after the diagnosis, should actively choose intravenous anti-infection treatment, the application of broad-spectrum penicillin sodium combined with metronidazole intravenous input. During the treatment period can be combined with conventional treatment, sitz bath, to a certain extent can relieve the condition, usually appropriate sports and exercise, can enhance physical fitness, improve the resistance to disease.