0.5mm stones have reached the bladder opening and symptoms disappear, this situation may be excreted. The diameter of the normal urethra is generally around 5-7mm, 0.5mm stone if the bladder has reached the mouth and the discomfort disappears, then through appropriate exercise and drink a lot of water to urinate, the stone may be excreted through the urethra under the action of urine. The size of 0.5mm stone is relatively small, for this case you can take conservative treatment, and follow the doctor’s advice to take stone pellets or kidney stone particles and other drugs to promote the dissolution of the stone. If 0.5mm stones are found to have reached the bladder, it is recommended to consult a doctor in time to receive regular treatment, and usually pay attention to a light diet and regular water intake to prevent recurrence of urinary tract stones.