Normal adults with small bladder stones generally have no symptoms, less than 1cm of bladder stones can be discharged through the urethra on their own, if there is some urinary frequency, urgency, painful urination, activity after the naked eye hematuria and interruption of urination of these symptoms, highly suspected that there may be a bladder stone, it is time to go to the regular hospital to do an ultrasound, to make clear whether there is a stone of the situation, the formation of small bladder stones for a number of reasons. There are many reasons for the formation of small bladder stones: the first is that small stones from the ureter fall into the bladder, and some people may not be able to discharge; the other is urethral obstruction, such as prostatic hyperplasia in elderly patients or elevation of the inlet, etc., which makes the path of urination not smooth, so the stones are not able to be discharged adequately, which causes some people to have frequent urination, urinary urgency, urinary pain, and hematuria after the activity of the symptoms of the blood in the eyes.