It is recommended to go to the hospital for examination if there is pain in the left kidney area from right kidney stones, to make sure that it is not the right kidney stones that cause pain in the left kidney area. Because stones in the right kidney will only cause symptoms of discomfort in the right kidney area and will not spread to the left side, it is time to go to the hospital for further examination and first perform a urinary system examination to understand whether there are stones in both kidneys. If there are stones in both kidneys, there can be pain in the left kidney area. At the same time, it is necessary to further check whether there are stones in the left ureter, which can cause left hydronephrosis and pain in the left kidney area. It is also necessary to check for pyelonephritis on the left side. If combined with left pyelonephritis, pain can occur, accompanied by fever or urinary tract irritation symptoms such as frequent and urgent urination, which can be confirmed by urine routine and urine culture examination. It is also necessary to further check whether there are diseases such as lumbar disc herniation or lumbar strain, which can also cause bilateral kidney pain or pain in the left kidney area.