Drinking more water is not suitable for most patients with heart failure, because drinking too much water will aggravate the load on the heart, but for patients with stable conditions, it is possible to drink water appropriately, and for patients with more serious conditions or acute phase, the amount of water intake should be strictly controlled. Heart failure patients due to poor systolic and diastolic function of the heart, need to reduce the preload and afterload of the heart, preload refers to reduce the amount of return blood, such as controlling the amount of water intake, dilate the venous blood vessels, control the drip rate of intravenous drugs. So for most patients with heart failure need some degree of control over the amount of water they drink. If the early stage of heart failure, cardiac function can still be compensated, do not need to strictly control the amount of water, but in order to reduce the burden on the heart, usually also pay attention to eat less salty, do not drink too much water. If the middle and late stage of heart failure, or acute attack of heart failure, to strictly control the amount of input, will be recommended according to the amount of urine hydration, to ensure that the balance of body fluids in and out of the body, for the edema is serious, will increase diuresis, reduce the drinking of water, so as to achieve the role of reducing edema, reduce the burden on the heart. Heart failure patients usually diet, water, activity level is recommended to consult the doctor consulted, usually to actively cooperate with the treatment.