Symptoms of hypertension are as follows: 1. elevated blood pressure: blood pressure >140/90 mmHg measured more than twice in a row at 4-hour intervals in a quiet state; 2. edema: weight gain >0.5 kg per week; 3. proteinuria: 24-hour urine protein ≥0.3 g or random proteinuria >(+); 4. brain dysfunction: dizziness, nausea, vomiting, blurred vision, eclampsia convulsions and cerebral hemorrhage; 5; 5, liver dysfunction: elevated liver enzymes, hemolysis, thrombocytopenia, Haber syndrome; 6, cardiac dysfunction: such as hypertensive heart disease; 7, affecting the fetus: such as placental abruption, fetal growth restriction.