HELLP is an abbreviation for hemolysis, elevated liver transaminases and thrombocytopenia. HELLP syndrome is characterized by hemolysis, elevated liver enzymes and thrombocytopenia, and is a serious complication of hypertensive disease during pregnancy. The fetus may have growth restriction, stillbirth, stillbirth, premature birth, etc., which seriously threaten the life of mother and child. The main clinical manifestations are nausea, vomiting, right upper abdominal pain, headache and blurred vision. Some patients have sudden weight gain, hematuria, gastrointestinal bleeding, etc. There are also patients with normal or slightly high blood pressure, or no hypertension and proteinuria. Confirmation of diagnosis depends mainly on laboratory tests: 1. intravascular coagulation. 2. elevated liver enzymes. 3. thrombocytopenia. Therefore, regular maternal checkups should be performed during pregnancy, and the frequency of maternal checkups should be increased in case of abnormalities.