Kidney stones can cause lumbar swelling, but if the lumbar swelling is not necessarily caused by kidney stones, there are many reasons for lumbar swelling: first, lumbar muscle strain, lumbar disc herniation will also appear lumbar swelling. Second, urinary tract infection, urinary tract infection, especially pyelonephritis, will also appear lumbar acidity, accompanied by frequent urination, urinary urgency, fever and other symptoms. The third, chronic prostatitis will also appear waist soreness and discomfort, accompanied by frequent urination, incomplete urination and other symptoms. Fourth, when the kidney is heavily hydrated, there will also be symptoms such as soreness and discomfort in the lower back. Fifth, when the kidney tumor is the primary symptom, it will also appear soreness and swelling of the waist and discomfort. Therefore, it is recommended to visit the hospital when the waist is sore and swollen to clarify the cause and treat or deal with the symptoms.