In general, the process of kidney stone discharge from the body is not felt, but a small number of patients will be in the process of stone discharge, renal colic and other feelings. In general, the process of kidney stone discharge from the body, the human body is no pain and other feelings, because generally only a small diameter stone can be discharged through the urethra, then this time more than no feeling, but if the observation of the discharged urine, you may find the stone. However, it can not be ruled out due to larger stones or sharp edges, resulting in the stone in the process of discharging the body friction renal tissue and urethra, you can appear renal colic and urethral pain and so on, generally after the stone is discharged from the body, the patient will feel the pain disappeared. If kidney stone patients experience discomfort, it is recommended to consult a doctor in time.