The invention belongs to the technical field of medicament, and provides levamlodipine beaylate tablets and a preparation method thereof. The tablets consist of tablet cores using the levamlodipine beaylate as an active component and film coatings coated on the outer layer, wherein diluent in the tablet cores contains diatomite or aerosil, or a mixture of diatomite and aerosil, and contains other pharmaceutically acceptable supplementary materials; and the outer film coating accounts for 8 to 12 percent of the weight of the tablets, and can play a role in resisting humidity and avoiding light to ensure that the medicinal stability can be greatly improved, and related substances are obviously reduced. Furthermore, the tablets have small specification, so the tablets ensure uniform content, and improve dissolution; and the method is simple and controllable, and ensures that the hygroscopicity of the medicament is obviously reduced.