Patients with kidney stones may experience low back pain, but in general, most patients with kidney stones are asymptomatic: 1. If a kidney stone falls into the ureter where it joins the kidney or falls into the ureter, it may cause obstruction in the urinary tract, which can cause pain by stimulating pain receptors after the upper urinary tract expands. 2. Patients with kidney stones are more likely to get urinary tract infections than normal people, and when pyelonephritis occurs, the inflammation may cause back pain. Therefore, if patients with kidney stones want to prevent these situations from happening, they should discharge the stones in a timely manner, and patients are advised to drink water regularly and urinate more often to prevent kidney stones.