1, overweight/obesity, dyslipidemia, smoking, alcohol abuse, and sedentary lifestyle are common; 2, elevated diastolic blood pressure is predominant, pulse pressure is small, and pure diastolic hypertension is common; 3, early target organ damage is manifested by abnormal circadian rhythm of blood pressure; 4, early morning hypertension with a gradual increase at night is the main manifestation; 5, middle-aged and young people with hypertension emphasize beta-blocker application.