The invention discloses an automatic yarn bobbin bagging machine. The machine comprises a bag sleeving and bag taking device and a bagging device connected with the bag sleeving and bag taking device;woven bags are subjected to positioning, opening and sleeving through a bag pressing mechanism, a bag taking mechanism, a bag supporting mechanism, a bag opening mechanism and a bag sleeving mechanism in the bag sleeving and bag taking device in sequence; then adjacent bobbins are placed in a front-back staggered mode through a turning over mechanism in the bagging device, that is, every other yarn bobbin is turned over by 180 degrees through the bobbin turning over mechanism; then the arranged yarn bobbins are pushed into the bags through a bagging pushing mechanism in the bagging device; and finally the loaded bobbin bags are conveyed away through a discharging mechanism in the bagging device. According to the machine, the automation degree is high, the bagging effect is good, the manual operation is not needed, the labor cost is reduced, and the working efficiency is improved; and meanwhile, the structure is simple, the automation degree is high, bag bodies move in parallel all thetime in the bagging process, and turning-over is not needed, so that the fault of bagging failure caused by bag body deformation is avoided, and the reliability is high.