The effect of single fir tea duck excrement is beauty, improve skin allergies, lose weight and prevent the formation of tooth decay. The tea polyphenols contained in the single fir tea can play an antioxidant role, avoid the consumption of vitamin c, and have the effect of whitening. It can effectively improve the enzymes that decompose fat, improve fat metabolism, and achieve the effect of weight loss. It can inhibit the production of tea scale enzyme and prevent tooth decay.