The serum set is a means of communication between the serum chamber and the angioket, vein scalp or needle head to transfer the serum to the patient's body and is used to administer intravenous fluids. Mechanism of system operation: After removing the protector, insert the spike into the serum chamber, hang the serum chamber on the base, ventilate the whole path with the serum passing, and close the spool to the end, connect the end connector of the serum set to the angioket and open it Spool, adjust the amount of flow as desired.