Normal adult daily intake of water should be about 1500-2000 ml, if you drink more than 2000 ml of water a day, but still balanced with the amount of water excretion, generally will not endanger human health. But beyond the needs of the body, it will have adverse effects, and even cause water intoxication, for some patients with poor heart and kidney function, may aggravate the condition. In cases where the body loses more water, such as hot weather, dryness and strenuous exercise, even if you drink more than 2,000 ml of water a day, as long as the amount of water is not particularly high, such as up to 4,000 ml or even more, while replenishing the right amount of salt, generally will not have an impact on health. If you drink more than 2000 ml of water a day is not a lot, such as 3000 ml, generally will not affect health, but there will be an increase in urine, which may increase the burden on the kidneys, which is not good for kidney function in the long term. If drinking water reaches about 3000 ml, it may lead to blood dilution, frequent urination, edema, weight gain, pale skin, dizziness and weakness. If it reaches 5,000 ml, it may cause water intoxication, leading to swelling of brain cells and causing increased intracranial pressure, which may result in symptoms such as headache, drowsiness or restlessness, and severe and sustained increased intracranial pressure may also cause brain herniation. People with underlying diseases, such as some patients with cardiac and renal insufficiency, need to strictly control water intake, drinking more than 2000 ml of water a day may increase the burden on the heart and kidneys, which is not conducive to recovery, and in severe cases may even induce organ failure. In addition, patients with urinary stones, gout and other diseases, it is recommended to follow medical advice to appropriately increase the amount of water intake, the daily water intake can exceed 2000 ml, in the case of normal heart and kidney function, the amount of drainage will also increase, and usually does not cause a burden on the body. By promoting urination and accelerating metabolism, it is conducive to inflammation subsidence and can play a role in stone and gout relief.