Symptoms of kidney stones with low back pain on one side may be caused by stone stimulation of renal pelvic mucosa, stone detachment leading to obstruction, urinary tract infection and other reasons. 1. Stone stimulation of renal pelvic mucosa: Due to the local stimulation of renal pelvic mucosa by kidney stones, it will lead to the spasm of renal pelvic smooth muscle and the release of pain mediators, which will lead to the symptom of low back pain on one side, and it may be accompanied by nausea, vomiting and other uncomfortable symptoms. 2. Stone detachment leading to obstruction: if kidney stones suddenly detach to the renal pelvis and ureteral connection causing obstruction, leading to dilation of the urinary tract, stimulation of pain receptors, there will also be a side of low back pain symptoms, the pain is usually severe and intolerable. 3. Urinary tract infection: kidney stones can easily induce urinary tract infection, such as acute pyelonephritis, etc., the patient will also appear on one side of the lower back pain, as well as frequent urination, urinary urgency, urinary pain and other symptoms of bladder irritation. If the patient has kidney stones on one side of the back pain, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor, improve the relevant examination, clarify the cause of the disease, for treatment.