Micro motor infusion pump

The invention discloses a micro motor infusion pump which comprises an infusion board assembly and a motor driving device. The infusion board assembly comprises one-way valves, elastic pump tubes, an air elimination diaphragm and an impedance probe which are integrated on an infusion substrate; the liquid inlet channel and the liquid outlet channel of the infusion substrate are respectively connected with an infusion bag and the air elimination diaphragm; both ends of the liquid inlet channel and the liquid outlet channels are connected with two parallel pump tubes, and are respectively provided with the on-way valves; the air elimination diaphragm is integrated on the substrate, the cavity of the diaphragm is provided with a hydrophilic air barrier film, and the bottom of the lower cavity thereof is provided with an air elimination hole with an exhaust diaphragm; the impedance probe is arranged at a liquid outlet; and the microcomputer part swings through a swinging extrusion head toalternatively press the e