Diastolic hypertension is defined as diastolic blood pressure ≥ 90 mmHg on at least three non-same-day blood pressure measurements using standard measurement methods under quiet, awake, and non-antihypertensive medication conditions. diastolic hypertension alone is mainly associated with poor lifestyle and psychosomatic factors. Diastolic hypertension alone is commonly seen in young and middle-aged hypertensive male patients aged 20 to 50 years, with mostly insidious onset and reduced pulse pressure, accompanied by weight gain. 1, a variety of factors lead to irregular changes in blood pressure: work stress, mental tension, long working hours, obesity, alcohol, smoking, sedentary, high salt diet and other poor lifestyle and simple diastolic hypertension its closely related. The main feature of hemodynamics is increased peripheral vascular resistance and normal cardiac output. 2, treatment should be based on lifestyle intervention: quit smoking and limit alcohol, low-salt and low-fat diet, ensure regular and adequate sleep, regular and appropriate exercise, weight control, etc., can make some patients gradually reduce blood pressure to normal; use antihypertensive drugs on the basis of risk assessment to avoid increasing the economic burden and psychological burden of patients. Angiotensin-converting enzyme inhibitors, angiotensin II receptor antagonists, and dihydropyridine calcium channel antagonists can effectively reduce peripheral vascular resistance, thereby controlling pure diastolic hypertension, and if necessary, they are also combined with other antihypertensive drugs. Elevated diastolic blood pressure needs to be detected and treated early, and regular home self-measurement and ambulatory blood pressure monitoring should be performed. Simple diastolic hypertension is common in young and middle-aged men, and treatment should be based on lifestyle interventions, supplemented by antihypertensive medication.