Blood thickening, i.e. hyperviscosity, usually has no obvious symptoms, but when cardiovascular and cerebrovascular diseases appear, corresponding symptoms can appear, and the improvement needs to be combined with medication, lifestyle and dietary adjustments. 1. Drug therapy: statins, such as atorvastatin and resuvastatin, are mainly used to reduce total serum cholesterol, and fibrates and nicotinic acid, such as fenofibrate and acyclovir, are mainly used to reduce triglycerides. Lipid-lowering drugs are often associated with adverse effects such as liver damage and muscle toxicity, and the choice of drugs and treatment should be decided by the doctor according to the individualization of the patient. 2. Lifestyle: Dyslipidemia should pay attention to the improvement of lifestyle, smoking patients should actively quit smoking, smoking can raise the level of cholesterol and triglyceride and reduce the level of high-density lipoprotein cholesterol. Moderate exercise can reduce weight, lower cholesterol and triglyceride levels, and raise HDL cholesterol levels. 3. Diet: limited intake of fat and cholesterol, cholesterol level is easily affected by the intake of cholesterol in the diet. Fatty meat, egg yolks and animal offal contain high content of cholesterol and saturated fatty acids, which should be reduced. Although hyperviscosity has no obvious clinical symptoms, it is necessary to actively seek medical attention as early as possible and intervene and treat according to medical advice to prevent cardiovascular and cerebrovascular diseases.