A dispenser pump is mounted to an opening of a container to allow a user to dispense a cosmetic product in the container to the outside by a predetermined amount through a pumping operation. The dispenser pump allows a user to dispense contents by a predetermined amount through a cylinder (20) installed in a pump body (10a) by pressing a push button (40), the dispenser pump includes a pump body (10a) mounted to an opening of a container and to which a cylinder (20) is mounted; a cylinder (20) mounted to the pump body (10a); and a resilient member (30) mounted between the cylinder (20) and a working piston rod (26) and does not contact the contents to prevent hardening of the resilient member 30 and deterioration of the contents.