The invention relates to a preparation method of health-preserving pomegranate tea. The preparation method comprises the steps: picking of raw materials, withering, killing out, rolling and drying. The health-preserving pomegranate tea prepared by the method contains tea polyphenols, caffeine, lipopolysaccharide, theanine and other components closely related to human health, has the pharmacological actions of refreshing, clearing away heart-fire, clearing away summer heat, promoting digestion, resolving phlegm, removing greasiness, reducing weight, relieving restlessness, detoxicating, dispelling the effects of alcohol, promoting production of body fluid, quenching thirst, reducing pathogenic fire, improving eyesight, relieving dysentery, dehumidifying and the like, and also has certain pharmacological effects on modern diseases such as radiation sickness, cardiovascular and cerebrovascular diseases and cancer, so the health-preserving pomegranate tea is health-preserving and health care green tea capable of helping digestion, promoting absorption of nutrient components, preventing and treating peptic ulcer, reducing cholesterol and preventing and treating aged diseases.