Mackerel, also known as mackerel, contains protein, fat, potassium and other nutrients. Mackerel has high nutritional value and sufficient water content, accounting for 73.9%, which is a better source of water food supplement. The main nutrient is protein, per 100g mackerel contains protein 20.1g, for high quality animal protein, is a good protein food supplement choice. In terms of minerals, mackerel contains 325mg of potassium and 184mg of phosphorus per 100g of mackerel, which can be used as a food supplement source of potassium and phosphorus. Mackerel has a lot of nutrients, but it should be consumed in moderation and avoided in large quantities for a long period of time, otherwise it will bring digestive burden to the stomach and intestines and cause discomfort. In addition, mackerel can be eaten with vegetable foods (such as cabbage, cauliflower, lettuce, etc.) to achieve balanced nutrition. Those who are allergic to mackerel should not consume mackerel.