Hypotonic dehydration can be treated with general therapy, medication, etc. Dietary modification should also be paid attention to. 1. General treatment: oxygen, supervision, fluid infusion and symptomatic and etiologic treatment. 2. Drug treatment: saline solution, applicable to mild to moderate sodium deficiency. Concentrated sodium chloride solution, suitable for patients with severe sodium deficiency. There are also isotonic saline and dextrose anhydride, applicable to patients with severe sodium deficiency and shock. 3. Dietary modification: If gastrointestinal symptoms are severe, it is recommended to supply energy with extra-gastrointestinal diet. Diet should pay attention to replenish water as well as the corresponding sodium salt, can drink a little bit of light saline and so on. If oral rehydration is not effective, it is recommended to follow the doctor’s instructions for infusion treatment. If there is any discomfort, it is recommended to consult a regular hospital and standardize the treatment under the guidance of a physician.