Hypertension, hyperglycemia and hyperlipidemia are collectively referred to as "three highs". In recent years, "three highs" have become the three major diseases with the highest incidence in China, and have induced many other diseases, such as atherosclerosis and coronary heart disease. It can be seen that the harm of "three highs" is imminent. The Encyclopedia of Three High Health Care introduces the etiology, symptom characteristics, diagnosis essentials, treatment methods of traditional Chinese and western medicine, daily diet and preventive nursing methods of three high, which is practical and operable, and is not only suitable for all patients with three high and their families to read, but also has a certain guiding role in preventing three high for healthy people.