Tremella extract is a product extracted from the fruiting body of Tremella tremella or the spores of Tremella fermented by liquid deep fermentation. The main active ingredient is Tremella polysaccharide. Tremella polysaccharide can improve human immune function, enhance the macrophage function of macrophages, and enhance the function of white blood cells. It has the functions of lowering blood sugar, lowering blood lipids, anti-aging, anti-ulcer, anti-thrombosis, anti-mutation, and maintaining skin moisture.