The invention discloses a railless automatic transfer butt joint platform. The railless automatic transfer butt joint platform comprises a transfer platform, a gesture adjusting mechanism a, a gestureadjusting mechanism b, a linear guide rail a and a rack; the rack and the linear guide rail a are mounted in parallel; the gesture adjusting mechanism a and the gesture adjusting mechanism b are mounted on slide blocks on the linear guide rail a; the transfer platform is driven by adopting multiple pairs of Mecanum wheels; the gesture adjusting mechanism a comprises a front-back moving mechanism,a lifting mechanism, a left-right translation mechanism, a gap elimination rolling mechanism and a diameter adjusting tool; the front-back moving mechanism comprises a motor a, a clutch a, speed reducer a and a straight gear a; when a motor of the gesture adjusting mechanism a moves front and back, the clutch a is closed, and the motor a drives the speed reducer a through the clutch a, so that the straight gear a is rotated and engaged with a rack of the transfer platform to drive the gesture adjusting mechanism a to advance along the linear guide rail a; and when the gesture adjusting mechanism a manually advances, the clutch a is off, and the gesture adjusting mechanism a is manually pushed to advance.