Diagnostic criteria for hypertensive kidney damage: 1, there is a clear history of hypertension, the onset of more than 5-10 years, the older the incidence of higher; 2, early clinical manifestations are nocturia, a small amount of foam in the urine. Accompanied by other organ damage of hypertension, such as left ventricular hypertrophy, changes in the fundus; 3, clinical manifestations of indirect renal tubular damage, such as nocturia, foamy urine, reduced urine osmolality, urine concentration dysfunction, 24-hour urine protein quantification <2g; 4, renal ultrasound suggests that the size of both kidneys is not the same, the surface of the kidneys is uneven; 5, other primary glomerular diseases can be excluded. When hypertensive patients have increased nocturia and foam in urine, they should go to the hospital promptly for early detection and early treatment.