Massive hemoptysis (over 200 ml at one go or over 500 ml in twenty-four hours) is considered as a serious case [1,2]. If the blood cannot be expectorated out from bronchus, sludged blood will form and obstruct the bronchus in a matter of a few minutes. Then an acute respiratory failure would be the immediate result, which might lead to a critical state or death of the patient. The most effective method to rescue patient is to suction off the sludged blood with a bronchoscope. But bronchoscopy normally is unable to draw-off the sludged blood from the bronchus because of the strong adhesive power of the sludged blood. However, cryotherapy under bronchoscopy may make sludged blood temperature cool below zero and become solid and then take out the sludged blood from the bronchus in a short time and rescue patient.