For chronic renal insufficiency, there are some differences in the recommendations of different guidelines, most of them are relatively uniform now, for all hypertensive patients, if they have chronic renal insufficiency, the standard is not higher than 140/90 mm Hg. Some guidelines are relatively strict, the recommendation level is different for individual patients, there are also recommendations for chronic renal insufficiency The blood pressure of patients with chronic renal insufficiency is recommended to be controlled at a lower level, within the range of 130 mmHg systolic and 80 mmHg diastolic, and not to exceed this range. In patients with a large amount of proteinuria, there are also guidelines that recommend lower blood pressure, below 125 mmHg systolic and below 75 mmHg diastolic. Overall, blood pressure control in patients with chronic renal insufficiency should be relatively strict to avoid continued damage to renal function from excessive blood pressure.