1. Although dried fish and shrimp lose some nutrients compared with fresh fish and shrimp, they are still very nutritious. \xd\2. Dried fish refers to fresh marine fish that are fully dried, and most of them are freshwater fish such as green grass, silver carp, mandarin fish, carp and crucian carp, which are salted and dried into aquatic products with moderate salinity. Common are dried squid, dried abalone and dried whitebait. Drying dried fish is for preservation. However, some nutritional value will be retained and some will be lost. Dried fish is a good food to supplement protein. When there is a lack of protein food for dinner, or when bread, cold noodles and instant noodles are used to satisfy hunger, adding dried fish as snacks can effectively supplement nutrition. Eating properly when traveling is also conducive to maintaining physical fitness. \xd\ shrimp is made in the same way. \xd\3. Nutritional value and disadvantages of dried fish and dried shrimp \xd\1) With the decrease of water content, the nutrients in dried fish and dried shrimp are concentrated, and the protein content is as high as 45%. Therefore, they are good food to supplement protein. When there is a lack of protein food for dinner, or when bread, cold rice noodles and instant noodles are used to satisfy hunger, adding dried fish and dried shrimps as snacks can effectively supplement nutrition. Eating properly when traveling is also conducive to maintaining physical fitness. However, the large amount of protein contained in dried fish and shrimp is only beneficial to human body to a certain extent. If there are too many protein, which exceeds the utilization capacity of human body, a series of metabolic wastes such as ammonia and urea will be formed in the body, which will increase the burden of liver and kidney. Protein, which can't be digested and absorbed, will promote the proliferation of intestinal spoilage bacteria, and form fecal odor and even carcinogens in the intestine. \xd\2) Dried fish and dried shrimps are foods with high energy, so eating more of them is no different from eating more meat. Nowadays, dried fish has a lot of fat. Eating more is not good for losing weight, and it will also increase the intake of saturated fatty acids. \xd\3) Dried fish, dried shrimps, shredded squid and other foods contain more "nitrosamines", which are a strong carcinogen and the result of the combination of protein decomposition products and nitrite. Occasionally, a small amount of food will not cause harm, but if you often eat a lot of dried fish or the raw materials for processing dried fish and shrimp are not fresh, it is likely to lead to excessive intake of nitrosamines. \xd\4) Increase salt. In order to facilitate preservation, dried fish and dried shrimps are added with a lot of salt, which will bring extra sodium when eaten, which is very unfavorable to chronic patients and may also aggravate edema, eye bags and premenstrual discomfort.