Disclosed is a double scale precise fixed speed and quantitative regulator for infusion including a fixed base (1) wherein an inlet (11) and an outlet (12) are provided under the fixed base (1) a movable flow rate adjusting plate (2) is fixed on the fixed base (1) a sealing gasket (4) is provided between the fixed base (1) and the flow rate adjusting plate (2) and the sealing gasket (4) is provided thereon with through holes corresponding to the inlet (11) and the outlet (12) the flow rate adjusting plate (2) is provided with flow channels (21) having different apertures and the inlet (11) is in communication with the outlet (12) through the flow channels (21) and the regulator is provided thereon with a flow rate identification (3) and the flow rate identification (3) consists of a dial scale (31) and a corresponding flow rate indicator (32). The regulator by changing the size of the flow channels (21) achieves the precise fast and stable controlling of the infusion flow rate and at the same time achieves the intuitive and easy reading of the infusion flow rate and infusion flow quantity. The regulator can facilitate performing a one handed operation and is consistent with a variety of clinical customs and application environments and thus ensures the transfusion safety. Especially when a regular patient s condition suddenly deteriorates the regulator quickly meets the urgent need to change the infusion to be precisely controlled and wins rescue time.
