The invention discloses a linear push rod motor. A driving structure comprises a worm; a pushing structure comprises a turbine, wherein the worm is meshed with the turbine; a manual adjusting assemblyis in linkage with the turbine through a plug connector; a linkage key is matched with the manual adjusting assembly and an adjusting rod; ball holes are formed in a ball screw guide sleeve; ball grooves are formed in a worm guide sleeve; a ball screw is sleeved with the ball screw guide sleeve and the worm guide sleeve; the ball screw guide sleeve is positioned between the ball screw and the worm guide sleeve; balls roll among the grooves, the ball holes and the ball grooves of the ball screw; a push rod is fixed on the worm guide sleeve, and the turbine drives the manual adjusting assemblyto rotate through the plug connector; the manual adjusting assembly drives the adjusting rod and the ball screw to rotate through the linkage key; the balls enable the ball screw guide sleeve and theworm guide sleeve to move up and down along the ball screw, and the push rod is telescopic, so that the coaxiality required by axial thrust in the transmission process is not very high, the reserved tolerance of part machining can allow axial small-amplitude swing, and the loss of axial thrust is avoided.