There are many clinical causes of right-sided lumbar swelling and pain, and the most common ones are the following. If a patient has kidney stones or ureteral stones, it will cause swelling and pain in the right side of the waist. For such patients, it is necessary to actively conduct routine urinalysis and urological ultrasound examination to make a clear diagnosis. Second, the presence of kidney deficiency can also cause distension and pain in the right side of the waist. If the patient has gynecological inflammation, ovarian cyst or ovarian cancer, it will also cause swelling and pain in the right side of the waist. If the patient has local muscle sprain and small joint disorder, it will also cause distension and pain on the right side of the waist.