The treatment of pulmonary edema in acute left heart failure is as follows: 1.Rapid digitalisization Digoxin or Sidran is chosen for intravenous injection; when it is not sure whether digitalis has been used in the near future, Sidran 0.01mg/kg can be chosen. 2.Diuresis Tachyphylaxis or diuretic acid can be chosen for intravenous injection to promote sodium and water excretion and eliminate edema. 3.Sedation When the child is extremely agitated, morphine is preferred 0.1mg/kg each time, subcutaneous or intramuscular injection, this drug has the effect of inhibiting the overexcited respiratory center, can relieve respiratory distress, and can increase the peripheral blood volume, reduce venous reflux. Pay attention to the dose when using, newborns and shock, coma, respiratory failure is prohibited, infants and young children are used with caution. 4, oxygen in oxygenated glass bottle filled with 50-60% alcohol, each time oxygen 10-20min, interval 15-30min, repeated 1-2 times, can make the foam in the alveoli due to reduced surface tension and rupture, increase the contact area of the gas and alveolar wall, improve gas exchange, 5, reduce venous reflux The child to adopt a semi-recumbent or sitting position, legs down to reduce the amount of venous return heart blood. In severe cases, three limbs can be restrained with arm bands at the same time, with the pressure maintained between systolic and diastolic pressure, and the arm band of one limb can be relaxed for 15 minutes every 15 minutes in turn, and the unrestrained limb can be replaced. 6.Adrenocorticotropic hormone has cardiotonic, anti-aldosterone and anti-diuretic hormone effects, and can be applied for a short time. Dexamethasone 2.5-5mg/d or hydrocortisone 5-10mg/kg added to 10% glucose solution intravenous slow drip, discontinued after the control of heart failure.