大咯血是内种急症之一。要预测病人是否发生咯血是极为困难。它不但危急生命一往往抢救及护理有其重要意义。护理体会如下；1病人咯血前的护理1．1了解病史，有既往哈血病史的病人，血止后仍然不能忽视反复咯血的可能性．尤其对病情恶化．季节变冷，气温改变时更要注意。1．2了 Hemoptysis is one of the most urgent diseases. To predict whether patients have hemoptysis is extremely difficult. It is not only critical life-saving and nursing often have its significance. Nursing experience as follows; 1 patient hemoptysis before the care 1.1 to understand the medical history of patients with previous history of hemophilia, after blood still can not ignore the possibility of repeated hemoptysis. In particular, the deterioration of the disease. Season is cold, more attention should be paid when the temperature changes. 1.2 now