Thick blood vessels generally refers to thick blood, hawthorn has the effect of lowering blood fat, for people with thick blood caused by high blood fat, drinking hawthorn red date water has certain auxiliary therapeutic effect. Blood viscosity is the increase of blood viscosity, besides the factor of high blood fat, there will be other reasons, such as drinking less water, addicted to smoking and drinking, irregular life, lack of exercise, emotional fluctuation and so on. Hawthorn, as a traditional Chinese medicine, has the function of eliminating food, moving qi, resolving turbidity and lowering fat (clearing dirty and turbid substances in the body and reducing excess fat in the body), soaking water and drinking it has a certain effect on the thickening of blood caused by high blood fat, but the effective components are limited in precipitation, and it is not generally used as a means of treatment. Daily attention should be paid to low-salt and low-fat diet, active exercise, proper water intake and regular work and rest. Dyslipidemia is generally considered to be treated by western medicine, and statin drugs should be chosen according to the doctor’s instructions. Blood viscosity need to go to the regular hospital to improve the relevant examination, after a clear diagnosis, under the guidance of the physician reasonable treatment.