Hypochlorhydria treatment, first of all, the causes of hypochlorhydria should be identified, the most common ones clinically are as follows: First, a large number of diuretics are applied, such as the tab diuretic furosemide, etc. Diuretics can be stopped and blood biochemical levels can be checked. Second, patients with tumors, such as oat cell carcinoma of the lung, can have obvious hypochlorhydria, and can perform chest CT and lung tumor marker examination to clarify the diagnosis. Third, patients with severe nausea and vomiting can have hypochlorhydria and hyponatremia, which can be treated symptomatically by active rehydration, such as intravenous sodium chloride drip. Fourth, patients with adrenal gland disease can be clearly diagnosed by CT examination of the adrenal glands and can be treated surgically if necessary.