The invention discloses a
mirabegron sustained release preparation and a preparation method thereof, and belongs to the technical field of pharmaceutical preparations. The
mirabegron sustained-release tablet comprises the following components in parts by
mass: 60-90 parts of a
mirabegron sustained-release compound, 20-80 parts of a film-forming agent, 1-20 parts of a
plasticizer, 0-3 parts of a
thickening agent and 0-1 part of a
sweetening agent. The mirabegron sustained-release preparation prepared by the invention not only realizes the sustained-release effect of mirabegron, but also realizes accurate and controllable dosage, can be rapidly disintegrated in the
oral cavity without water, is extremely convenient in administration mode, and greatly improves the medication compliance of patients.