Radix salviae miltiorrhizae formula granules and preparation method thereof

The invention relates to the technical field of traditional Chinese medicine formula granules, and discloses radix salviae miltiorrhizae formula granules and a preparation method thereof. The method comprises the steps of: (1) pulverizing a radix salviae miltiorrhizae medicinal material into a powder of 10 to 50 mesh; (2) mixing the powder obtained in the step (1) with an aqueous ethanol solutionin a volume 20 to 30 time of the powder, wherein the concentration of the aqueous ethanol solution is 30-50% by weight; (3) conducting ultrasonic extraction 1-3 times; (4) conducting filtration, concentrating a filtrate under reduced pressure to a concentrated solution with a relative density of 1.1 to 1.2; (5) mixing the concentrated solution with accessories; (6) conducting freeze-drying, and collecting dry paste powder; (7) pulverizing the obtained dry paste powder, sieving the pulverized dry paste powder through an 80 mesh sieve, and conducting mixing in a mixing tank; and (8) granulatingthe obtained paste, and se