1. Identify famous and high-quality food packaging from the packaging and packaging decoration. Most packaging uses mechanized packaging, the packaging quality is good, and the pasting ports and interfaces are neat and accurate. The packaging of counterfeit and inferior goods is generally simple and rough, and the packaging is mostly done manually. Therefore, the packaging quality is poor, the packaging is uneven, the interfaces and pasting openings are not neat, and loosening is common. Decorative printing. Famous and high-quality products are beautifully printed, with accurate overprinting and good gloss; while fake and inferior products are shoddily printed, with inaccurate color registration, several colors in the pattern are shifted, the colors are dim, different shades, and the pattern is blurry. Some counterfeit goods are packaged in old purchased packaging, with visible stains and creases. 2. Identification from trademarks A trademark is a specific mark for goods, and a trademark is a mark that distinguishes the same kind of goods. Goods produced by the same producer and operator can use different trademarks according to needs. Some goods for export use one trademark and goods sold domestically use another trademark. However, a trademark can only belong to one producer and operator, and others are not allowed to use it fraudulently. Counterfeit trademarks also have unclear patterns and inaccurate color registration. 3. Pay attention to whether there are anti-counterfeiting signs and see if there is a printed bar code. The computer can identify and affix laser labels and color-changing sealing paper. 4. Use food labels to identify famous and high-quality products, including production date, shelf life, etc. However, many fake and inferior foods are not marked with "three periods", especially the production date. Therefore, consumers should buy foods with complete food labels, including batch number, production date, and shelf life. 5. Sensory identification Sensory identification is to inspect the color, aroma, taste, shape and other aspects of food. Check whether there are any abnormal phenomena in the food. Pay attention not only to the abnormal phenomena that are bad, but also to the phenomena that are surprisingly "good". One is to observe the color. Check if the food has any abnormal color. If the barbecued pork has a bright red color, it may have added coloring. The second is to smell its smell. High-quality food has its own inherent flavor. The third is to taste it. Just like the smell, each food has its own unique flavor, and you can tell whether it is authentic or fake by tasting it. The fourth is to observe the organizational form of food to find abnormalities in food.