The invention discloses a steel tube straightening machine guiding working roll axial auxiliary device which comprises a machine body (1), wherein a direction sensing module (2), a pressure sensing module (3), an axial adjustment module (4) and a management module (5) are arranged on the machine body (1); when the steel tube straightening machine guiding working roll axial auxiliary device is under operation, the direction sensing module (2) senses the position placement condition of a material; the pressure sensing module (3) senses the axial stress condition; the axial adjustment module (4) adjusts the position of a guide roll; the management module (5) deals with the comprehensive information; a setting module (6) is arranged on the pressure sensing module (3) to set a proper numerical range of pressure stressed on a guide shaft; a fixed point auxiliary module (7) is arranged on the axial adjustment module (4) to assist in fixing the guide shaft at a proper position; a prompt module (8) is arranged on the management module (5) to give out prompt when pressure or abnormal position of the guide shaft is sensed; the position of the guide roll is set according to different materials to prevent excessive pressure from affecting the operation effect.