The present invention relates to an infusion flow-rate regulating device (100) enabling easy attachment and detachment of a flow-rate regulator (240) provided in an infusion set (200), and enabling automatic adjustment of a dial (242) of the attached flow-rate regulator (240) such that a liquid can be administered at a target flow rate. To this end, an infusion flow-rate regulating device (100) of the present invention comprises: a body (110)； a dial mounting unit (130) rotatably connected to the body (110)； a flow-rate regulator separation unit (140) preventing a flow-rate regulator (240), mounted on the dial mounting unit (130), from being arbitrarily separated； and a control unit (170) for controlling the flow-rate of a liquid by using a method for rotating a dial (242) for each drip infusion dripping time interval corresponding to a target flow rate and/or a method for rotating the dial (242) to a position enabling administration of the liquid at a target flow rate by means of a single flow-rate adjustment.
