The invention belongs to the field of preparation of health-care tea, and particularly relates to a preparation method of pressure-relieving health-care green tea with a flower scent. According to the preparation method, purple bud tea serves as a raw material, two-time shaking and two-time composite enzyme liquid spraying processes are combined, and a finished product is obtained after steps of fresh leaf picking, withering, sun drying, primary shaking, primary composite enzyme liquid spraying, secondary shaking, de-enzyming, rolling, secondary composite enzyme liquid spraying, initial drying, refined rolling, drying and cooling. The health-care green tea prepared according to the preparation method has the advantages that the content of free amino acid in tea soup is increased greatly, the content of bitter phenol compounds is lowered, the dried tea is purple black, the tea soup is light purple, the flower scent is obvious, the taste is strong, and aftertaste is sweet; the tea has a faint scent of green tea and the flower scent of oolong, has a health care effect of relieving blood pressure, and can meet demands of modern people for health maintenance and care, thereby having wide market prospect.