The symptoms of pre-eclampsia, which usually occurs in the middle and late stages of pregnancy, include: 1. hypertension, the systolic blood pressure of a normal person does not exceed 140 mmHg and the diastolic blood pressure does not exceed 90 mmHg. if the blood pressure exceeds 140/90 mmHg several times, we should be alert to the presence of hypertension during pregnancy. 2. edema, edema is often sunken, starting from both lower limbs, usually more serious at night and may decrease in the morning. 3. The patient may have a positive urine protein. 4. other symptoms, including neurological symptoms, such as headache and dizziness; digestive symptoms, such as nausea, not wanting to eat, vomiting; and blurred vision, etc.