Automatic alarming transfusion rack with pre-calibrated limit value

The invention relates to the medical field, in particular to an automatic alarming transfusion rack with a pre-calibrated limit value. The automatic alarming transfusion rack comprises a base, a lifting sleeve, a connecting plate, a hanging plate, a telescopic device, an alarm device and a transfusion hanger, wherein the lifting sleeve is mounted on the upper end surface of the base; the connecting plate is mounted on the upper end portion of the lifting sleeve; the hanging plate is mounted on the upper end portion of the connecting plate and is connected to the telescopic device through a hinge column; the alarm device is arranged on the connecting plate; the transfusion hanger is hinged to the telescopic device; and a trigger rod is arranged at the lower end. The automatic alarming transfusion rack provided by the invention is reasonable in structural design, a positive conducting strip, a negative conducting strip and a conducting reed are combined to form a single-pole single-throwswitch, the shift of a t