Increased resistance index of right renal artery is a kind of renal artery vascular ultrasound abnormality, which may be caused by stenosis or obstruction of the right renal artery, and is usually treated by interventional surgery or radical surgery. 1. Renal artery stenosis: atherosclerosis and other diseases, due to intravascular plaques leading to vascular stenosis, ultrasound manifestation of the right renal artery resistance index increases; generally after a clear diagnosis of imaging, according to the patient’s condition, give the stenosis section of the balloon dilatation of interventional therapy. 2. Renal artery obstruction: when urinary system tumors such as renal pelvis tumor, the tumor infiltrates part of intrarenal blood vessels, and when infiltrating the right renal artery blood vessels, it leads to right renal artery obstruction, and ultrasound suggests that the right renal artery resistance index is increased; generally, radical surgical resection of the lesion is adopted for treatment. A single abnormal result of increased renal artery resistance index can not be used as the basis of disease diagnosis, and it should be timely to improve the relevant examinations, and the professional doctor combined with the patient’s condition and other auxiliary examination results to make a clear diagnosis and then carry out standardized treatment.