Tremella can be stored in the cold storage area of refrigerator for about 2 days. Tremella belongs to lung, stomach and kidney meridians, nourishing yin and moistening lung, and can treat cough due to fatigue and blood in phlegm. Tremella also has the effect of nourishing the stomach and promoting fluid production, and can treat symptoms such as thirst, stomach dryness and body fluid injury. Tremella polysaccharide can regulate the activity of sugar metabolizing enzymes and promote insulin secretion, thus improving the utilization rate of glucose in the body and reducing blood sugar.