This invention is related to a kind of teeth bleaching formulation containing the vegetative enzymes extracted from plant tubers with extensively applications in cosmetic dentistry. The enzymes are susceptible to promote the decomposition (dissociation) of peroxide compounds, thus the intermediate hydroxyl free radicals are generated to turn the unpleasant stained tooth into light or colorless appearance effectively. The composition of a whitening gel may comprising 2.about.50 wt % of hydrogen peroxide, 0.003.about.3 wt % vegetative enzyme extract, and transferring to alkalinity approximately pH 8.about.13 to achieve the high efficiency dental bleaching usage.