Its nutritional value is not inferior to beef and tuna. Each hundred grams of dried squid contains 66.7 grams of protein, 7.4 grams of fat, and contains a lot of carbohydrates and calcium, phosphorus, sulfur and other inorganic salts. The protein content of fresh squid is as high as 16% to 20%, and the fat content is extremely low, only about 4% of the average meat, so the calories are much lower than those of meat. For those who are afraid of fat, they eat squid. It is a good choice. There is a higher content of taurine. Consumption of squid can effectively reduce the cholesterol accumulated in the blood vessel wall, and is effective in preventing vascular sclerosis and gallstone formation. At the same time can add brain power, prevent Alzheimer's disease and so on. Therefore, carp is a healthier food for the middle-aged and elderly people who are vulnerable to cardiovascular diseases.