Disclosed therein is a medicinal liquid supply apparatus, which includes a fixed-type medicinal liquid supply volume controller adapted to supply medicinal liquid only as much as a paramedic sets and fixes and an arbitrary medicinal liquid supply volume controller adapted to allow a patient or the third party to arbitrarily supply the medicinal liquid as occasion demands during the paramedics absence, thereby effectively supplying the medicinal liquid according to the patients disease and pain conditions. The medicinal liquid supply apparatus includes: a fixed-type medicinal liquid supply volume controller having a plurality of medicinal liquid branch hoses opened and closed by a controller and a medicinal liquid transfer hose always opened, the medicinal liquid branch hoses and the medicinal liquid transfer hose being connected to an inflow part and an outflow part of a medicinal liquid control line thereof and an arbitrary medicinal liquid supply volume controller connected to a double medicinal liquid hose having a branch tube connected to the medicinal liquid transfer hose of the fixed-type medicinal liquid supply volume controller, the arbitrary medicinal liquid supply volume controller having a medicinal liquid storing tube for storing the medicinal liquid transferred through the double medicinal liquid hose to arbitrarily and additionally supply the medicinal liquid by a button body.
