The present invention relates to a novel salt of (R)-(1-methylpyrrolidin-3-yl)methyl(3'-chloro-4'-fluoro-[1,1'-biphenyl]-2-yl)carbamate and a crystal form thereof. In addition, the novel salt of (R)-(1-methylpyrrolidin-3-yl)methyl(3'-chloro-4'-fluoro-[1,1'-biphenyl]-2-yl)carbamate and the crystal form thereof, according to an embodiment of the present invention, have remarkably excellent stability, hygroscopicity, and solubility.
