If a normal person drinks a lot of water above 5-6L once, that is, above 5000-6000ml basis, the situation of water intoxication will occur, water intoxication is also known as secondary hyponatremia, is water intoxication is to cause the greatest consequence is ionic disorder, there will be excessive sodium and water retention thus causing a decrease in blood sodium. At this time there will be obvious arrhythmias, such as chest tightness, shortness of breath, palpitations, patients will often have tachycardia, arrhythmia and other symptoms occur, serious cases will also appear hazy consciousness, loss of consciousness, delirium, coma and other states, all belong to the clinical symptoms and reactions when water intoxication. Mild cases of water intoxication can also occur abdominal pain, bloating, nausea, vomiting, etc. If there is a chronic cardiac insufficiency, water intoxication can also lead to secondary heart failure, resulting in death.