Rhodium(II) acetate dimer is mainly used as dyeing agent of synthetic fiber, raw material of leather processing aid and plastic plasticizer, as well as analytical reagent, dye intermediate, pharmaceutical excipients, spice additive and so on. When used for leather tanning, it can remove the oil in the fur and increase the gloss; It is also suitable for printing and dyeing as a dispersant. It can also be used to produce rayon and stabilizer for the manufacture of resin alcohol acetal polymers.