To provide a flow rate display element which can check the flow rate of liquid adjusted by mounting it on a flow rate adjustor provided on a liquid dosing set in the adjustment of the flow rate of the liquid such as a transfusion agent.

A flow rate display element 1A which is used by being mounted on the flow rate adjustor 4 provided on a transfusion set 5 (the liquid dosing set) has a display part 2 having a display plane 21 with a graduation for indicating the flow rate of the transfusion agent and an engaging part 3 for mounting it on the flow rate adjustor 4. The display part 2 is made flat and has a display plane 21 on one side thereof and the engaging part 3 is disposed on the other side of the display part 2.