The hazards of eating too much salt are as follows: 1, can cause an increase in the incidence of hypertension, because too much salt into the body can cause sodium and water retention, with the increase in the amount of fluid in the body and easy to cause an increase in blood pressure, if too much salt will cause a higher risk of hypertension; 2, will increase the metabolic burden on the kidneys, because sodium needs to be discharged through the metabolism of the kidneys, while sodium retention caused by too much sodium, further increase the metabolic burden on the kidneys, if too much salt will be eaten because of the increased metabolic burden on the kidneys, and the risk of edema, urine, kidney function decreased.