A kind of fluid delivery system (1) comprising for storing the liquid storage tank (7), pump chamber (8) and actuator (20) of fluid. Pump chamber (8) has pump chamber volume, liquid feed valve (48), liquid valve (49) and pump chamber film (47), liquid feed valve (48) provides the selectivity between pump chamber volume and liquid storage tank and is in fluid communication, and the displacement of pump chamber film (47) changes pump chamber volume. Actuator (20) moves back and forth driving member (21). Actuator (20) is set in the shell (9) of (36) with holes, and driving member is prominent from hole (36). Liquid storage tank (7) and pump chamber (8) are arranged in the medicine box (3) for being removably attached to shell. When medicine box (3) is connected to shell (9), driving member (20) is operably connected to pump chamber film (47). The fluid delivery system can be applied to the infusion system for infusion liquid treatment product such as insulin.
