Babies who drink too much water may suffer from water intoxication, electrolyte disorders, increased burden on the heart in a short period of time, reduced eating and other hazards. 1. Water intoxication: If a baby drinks too much water in a short period of time, he may develop symptoms of water intoxication, mainly headache, blurred consciousness, vomiting, crying and other discomforts. 2. Electrolyte disorders: after the baby drinks too much water, due to immature development of the kidneys, can not be discharged in a timely manner, which may lead to dilution of electrolytes in the body, prone to low-sodium, low-potassium and other electrolyte disorders, the baby will experience nausea, vomiting, abdominal pain, convulsions and other discomforts, and in severe cases, cardiac arrhythmia and so on. 3. Increased burden on the heart in the short term: drinking too much water in a short period of time leads to an increase in blood in the body, which further increases the burden on the heart. 4. Eating less: children’s stomach capacity is limited, if you drink too much water, often have no appetite, long-term may affect growth and development. If the baby drinks too much water after the above symptoms, it is recommended to go to the hospital in a timely manner, early formal treatment.