The present invention relates to an infusion flow adjuster which is used in order to adjust the flow rate of an infusion solution to be administered when performing infusion therapy, and relates to an infusion flow adjuster in which an arc-shaped flow path for adjusting the distance through which the infusion solution passes and a circular flow path for inducing discharge of the infusion solution that has passed through the arc-shaped flow path are constituted in a single plane, and which is easy to produce as a product for accurately adjusting the flow rate, affords convenience of handling being provided with a handle in a suitable position, and also, in addition to allowing fine adjustment of the flow rate, limits the maximum flow rate to an appropriate value, so being convenient to use during actual infusion therapy.