Left-sided kidney stones can cause chronic vague pain in the left side of the lower back and abdomen, often seen when the stones do not cause complete obstruction, when the vast majority of the urine produced by the kidneys can be excreted through the ureter, and there may be a small amount of fluid in the kidneys, so it does not cause more intense pain, but only vague pain symptoms. This pain can be located in the lower back, or it can radiate to the abdomen, or to the back. Patients are recommended to go to the hospital for examination to clarify the size of kidney stones and the degree of hydronephrosis, etc. to choose a more appropriate treatment method. If the stones are smaller than 6mm, oral lithotripsy medication can be taken to promote stone discharge, but if the stones are larger than 6mm, extracorporeal shock wave lithotripsy or surgery is recommended to break the stones and remove them from the body to achieve a complete cure. When the stones are removed from the body, the fluid can heal itself, so that the patient’s symptoms of hidden pain in the lower back and abdomen can gradually disappear and no further damage to the kidneys will occur.