Acute pulmonary edema caused by infusion, most of them are because the infusion is too fast or too much, resulting in pulmonary vascular fluid leakage into the alveoli or interstitium, thus causing acute pulmonary edema. Typical symptoms of acute pulmonary edema caused by infusion, mainly in the process of infusion can suddenly occur in the dyspnea or pulmonary bruising symptoms, specific can be manifested as a sudden severe dyspnea, the patient can not lie down, lips cyanosis, often cough, cough pink foamy sputum, the patient is more irritable, summed up as dyspnea, sitting breathing, pale, shortness of breath, rapid heartbeat, elevated blood pressure, cyanosis, coughing, pink foamy sputum. pink foamy sputum, etc. Treatment at this time is based on the administration of cardiotonic and diuretic drugs to expel excess water from the lungs. In addition, it is also necessary to give oxygen, sedation, because the more irritable may be more pronounced oxygen deprivation, and sometimes use morphine to reduce pulmonary edema, and play a certain role in sedation. Alveolar pulmonary edema is mainly manifested by coughing pink foamy sputum, because there is too much water in the alveoli, and this water tends to have relatively low osmotic pressure, which sometimes causes coughing pink foamy sputum.