A device for manufacturing biaxial orientation plastic pipe has the advantages that the device consists of an extruder, a machine head (1), a thermostat (2), a support bar (3), a expanded body (4), a calendaring roll (5), a spraying leaching device (6), and a drawing mechanism (7). The extruder is arranged at the pre-stage of the thermostat (2), the thermostat is arranged at the pre-stage of the calendaring roll (5), the calendaring roll is arranged at the pre-stage of the spraying leaching device (6), the spraying leaching device is arranged at the pre-stage of the drawing mechanism (7), the combination in turn forms the manufacturing device integration of the orientation plastic pipe. The front end of the extruder and a machine head body (11) of the machine head (1) connect with a sizing sleeve (13) by a pipe wall voltage regulation ring (12), the sizing sleeve (13) connects with a cooling sleeve (14). The machine head body is arranged with a core rod (10) therein, the back part of the core rod connects with a core rod rotation mechanism, the front part of the core rod gets into the machine head cooling sleeve (14) through the sizing sleeve (13) and gets into the calendaring roll (5) by the support bar (3) and the expanded body (4) in the thermostat (2). The plastic pipe gets into the drawing mechanism (7) by the spraying leaching device.