Demethylivabradine salt as well as preparation method and application thereof

The invention belongs to the technical field of the medicine, and specifically relates to a demethylivabradine salt as well as a preparation method and an application thereof. The demethylivabradine salt is a pharmaceutically acceptable salt, wherein the pharmaceutically acceptable salt includes citrate, hydrobromide, sulfate, phosphate, acetate, trifluoroacetate, lactate, acetonate, malonate, succinate, glutarate, fumarate, maleate, ascorbate, oxalate, mesylate, benzene sulfonate and camphorate, and has excellent stability and solubility, and also has low hygroscopicity and remarkable advantages.