Too much salt intake can increase the incidence of hypertension, stroke and stomach cancer, which is not good for health and should be reduced. Both the World Health Organization and the Dietary Guidelines for Chinese Residents require a salt intake of no more than 5g per day, mainly to remind people to reduce the taste and prevent chronic diseases. However, some people think that reducing the amount of salt used in cooking, using soy sauce, oyster sauce, MSG, etc. instead of salt to enhance the flavor, in fact, seasoning products also contain sodium and salt, 5g of salt includes all ingredients in the salt. To achieve salt limitation in life, need to pay attention to the invisible salt, some foods such as hang noodles, instant noodles, etc., contain salt.