The majority of the symptoms of frequent urination after IUI are urinary tract infections. 1, IUI is an invasive operation that requires strict examination before surgery, such as vaginitis or cervicitis need to be cured before placement, if there is no treatment direct IUI may cause infection and frequent urination. The procedure should be postponed and treated for fever and other infections before the operation, and the low resistance of the IUD is likely to aggravate the condition and cause pelvic inflammatory disease and urinary tract infection. 2. 4, recent poor rest, drink less water, etc. can cause urinary frequency symptoms, urinary frequency symptoms should be done after the urinary routine examination and timely medication.