A pagoda tree flower bud granular beverage cooling blood and arresting bleeding and a preparing method thereof are disclosed. The beverage is prepared from 40-50 parts by weight of pagoda tree flower buds, 15-25 parts by weight of milkvetch root, 10-15 parts by weight of danshen root, 10-15 parts by weight of peony root, 6-10 parts by weight of turmeric root tuber, 6-10 parts by weight of liquorice root, 6-10 parts by weight of rhizoma corydalis, 6-10 parts by weight of katsumada galangal seeds, 6-10 parts by weight of white mulberry root-bark, 6-10 parts by weight of rhubarb root and rhizome, 3-5 parts by weight of xylitol, 3-5 parts by weight of white granulated sugar, 3-5 parts by weight of rock candy and 3-5 parts by weight of citric acid. The method mainly includes steps of 1) pretreating the raw materials, 2) extracting, 3) filtering, 4) concentrating and drying, 5) crushing, 6) mixing, and 7) drying and granulating. Long-term drinking of the beverage has functions of cooling blood, arresting bleeding, clearing the liver and purging fire. The beverage has advantages of delicious taste, rich nutrition and capability of being green and healthy.