Indications Patients with water and sodium retention caused by various reasons such as hypertension, heart failure, acute nephritis, pregnancy toxemia, ascites, edema and pre-eclampsia. Chen Tao, Department of Physical Examination, Zhengzhou People’s Hospital Dietary principles 1. Daily salt content should not exceed 3g (or 10ml of soy sauce), for the purpose of seasoning taste, sugar and vinegar cooking can be used. 2, according to the specific condition to determine the specific amount of salt in the daily diet, such as edema obvious salt amount of 1g / d, general hypertension patients for 3g / d. 3, prohibit all salt cured food, such as salted meat, sausage, salted eggs, leather eggs, sausage, red sausage, pickles, pickles, sweet noodle sauce, and other salt-containing food and condiments with unknown salt content. 4, has been clearly salt content of food first calculated and then weighed and formulated, other nutrients according to normal needs.