Luo Han Guo can no longer be consumed after the expiration date, it is recommended to consume Luo Han Guo within the shelf life. Luo Han Guo belongs to the food of medicine and food, has the effect of clearing heat and moistening the lungs (removing heat to moisturize the lungs), facilitating the pharynx and opening the voice, and lubricating the intestines and laxatives, and can be used to treat lung-heat and dry cough, sore throat and loss of voice, and intestinal dryness and constipation. It is not recommended for people with cold lung and external cough. Expired traditional Chinese medicine, its efficacy role will be reduced, long time to place will make the loss of active ingredients, it is difficult to achieve the therapeutic effect. At the same time may produce harmful substances, after taking may cause poisoning, allergies and other symptoms, not conducive to the health of the body and the recovery of the disease. Drugs and food should be taken within the shelf life to avoid adverse consequences.