Porphyry has the effect of lowering blood sugar because the polysaccharide contained in it can help us effectively reduce fasting blood sugar. Black fungus is also a good choice. Black fungus contains fungus polysaccharides, vitamins, proteins, carotene, potassium and other nutrients. The fungus polysaccharide contained in black fungus also has a good blood sugar-lowering effect. Bitter melon and onions both have blood sugar-lowering effects. There are also Yangjiang and so on.