The present invention relates to an infusion flow-rate regulating device capable of allowing easy attachment and detachment of a flow-rate regulator provided in an infusion solution set and of automatically adjusting a dial of the attached flow regulator such that a fluid is able to be administered at a target flow rate. To this end, the infusion flow-rate regulating device includes a main body, a dial mounting unit rotatably connected to the main body, a flow-rate regulator separation unit for preventing arbitrary separation of a flow-rate regulator mounted on the dial mounting unit, and a controller for controlling a flow rate of fluid in a manner to rotate a dial to a position enabling injection of an infusion solution at a target flow rate by means of single flow rate control and/or to rotate the dial for each time interval of falling drops corresponding to a target flow rate.
