There is no clear standard for how long it takes for a ureteral stone to enter the bladder at the third stricture, and it depends on the individual case. The smaller the stone, the shorter the time to enter the bladder may be. Ureteral stones that are larger in diameter may get stuck in the third stricture and not be able to enter the bladder. Under normal circumstances, when a ureteral stone is smaller than 0.6 centimeters, it is usually able to pass out of the body on its own. As it passes downward, it passes through the three strictures at the end of the ureter, and there is no clear standard for the time it takes to enter the bladder. When draining the stone, you should drink a lot of water and urinate repeatedly, which is conducive to the stone’s entry into the bladder. When the diameter of the ureteral stone is larger than 0.6 cm, it may get stuck at the end of the ureter, unable to enter into the bladder, accompanied by severe lower back and abdominal pain, hematuria, and in severe cases, it will cause hydronephrosis. For larger diameter stones, we can consider in vivo shock wave lithotripsy or ureteral lithotripsy by ureteral flexible mirror lithotripsy to remove the stone. Because everyone’s ureter is different, whether or not the stone can be expelled and how long it will take to be expelled is a matter of each individual’s situation. After diagnosis of ureteral stones, it is important to actively cooperate with the doctor during the treatment period, do not carry out treatment on your own to prevent complications.