Transfusion warner

A transfusion warner comprises a meter regulator (1) and the bottom of the meter regulator (1) is connected with a hook (14). The transfusion warner is characterized in that a numerical value setting device is arranged inside the meter regulator (1); a warner and a solenoid valve (6) are arranged inside the meter regulator (1); the warner automatically alarms when the weight of a transfusion container (2) is reduced to be at a set value; the solenoid valve (6) automatically clamps a soft transfusion tube (7) and accordingly avoids air entering the transfusion tube (7); the warner and the solenoid valve (6) form into a loop respectively through circuits and an electronic control chip and a power source which are arranged inside a casing of the meter regulator (1). The transfusion warner has the advantages of being reasonable and practical, having multiple warning functions, timely reminding medical care personnel or patients, avoiding medical negligence due to the fact that a needle is not timely pulled out or