OTC is a national medicine, not a health product. OTC (Over The Counter) over-the-counter medicines, China’s Ministry of Health Department of Medicine is defined in this way: it is the consumer can not go through a doctor’s prescription, directly from the pharmacy or drugstore to buy drugs, can not be in the guidance of medical professionals can be used under the high security of drugs, that is, do not need to rely on the practitioner or assistant physician’s prescription can be purchased on their own and use of the drug. OTC medicines belong to the medicines with State Drug Authorization (SDA), which is a drug production approval number approved by the State Drug Administration (SDA), and different medicines have different approval numbers. OTC drugs are mostly used in the treatment of common diseases, such as colds, fever, cough, indigestion and so on. Its characteristics include: safe application, exact efficacy, and convenient application. Health food is the abbreviation of health food, does not belong to drugs, has the commonality of general food, can regulate the body’s function, but not for the purpose of treating diseases, can not replace drugs.