Double renal pelvis in the right kidney is not normal, usually a congenital malformation phenomenon. Double renal pelvis in the right kidney is a congenital malformation phenomenon, the specific cause is not clear, may be related to the family gene or chromosomal gene variations, environmental factors, etc., the normal person is two kidneys, each kidney has a renal pelvis, if one side of the kidney has a double renal pelvis, this case belongs to the congenital anomalies, in general there is no abnormality, do not have to deal with it and does not affect the function of the kidneys. When there is hydronephrosis or poor urination and impaired renal function, surgical treatment is needed, and most of them can be restored to normal through surgical treatment, usually pay attention to observe the amount of urination every year regular physical examination. It is recommended to go to regular hospitals for examination to clarify whether there is any abnormality in the kidney, once the abnormality is found under the guidance of the doctor as soon as possible surgical treatment in order to minimize the damage to the kidneys.