Low-sodium diet and low-salt diet is a similar diet, the conversion relationship between sodium and salt is 1g of sodium is equal to 2.5g of salt, 1g of salt is equal to 400mg of sodium, the difference between the two are as follows: 1, low-salt diet is the amount of sodium in the food supply is not more than 2g per day, the amount of salt in cooking per day should not be more than 2-4g, the amount of soy sauce should not be more than 10-20mL, avoid using all the over-salted or salted food. Including salted fish, salted eggs, salted meat and so on. Low-salt diet is applicable to cardiac insufficiency, chronic nephritis, as well as hypertension, edema, cirrhosis and ascites and other patients; 2, low-sodium diet is more stringent restrictions on sodium, the amount of sodium supply throughout the day can not be more than 500mg, a lot less than the amount of low-salt diet, in the daily cooking can not be put any more table salt, as well as soy sauce and other condiments, the same can not eat any pickled products. Not only that, but all foods that are relatively high in sodium should be avoided, including vegetables that are high in sodium, such as cabbage and celery. There are also alkaline-containing steamed buns, hanging noodles and seafood. The applicable population of low-sodium diet is more strict than that of low-salt diet. Patients suffering from serious diseases, such as severe heart failure, hypertension, edema, and the use of diuretics, can be appropriately changed to a low-salt diet, and then gradually transformed to a normal diet after the disease is relieved.