The utility model relates to a pry lever mechanism applied to an automatic doffer. The pry lever mechanism comprises a power module and a pry bar module, wherein the pry bar module comprises a pushing rod, a connecting rod module, a pry head module and a track plate with tracks. The connecting rod module comprises a connecting rod, a connecting rod joint shaft and a connecting rod guide bearing, wherein the connecting rod comprises a connecting rod front portion and a connecting rod rear portion, the pry head module comprises a pry head and a pry bar, the pry bar is connected with the connecting rod, one end of the pushing rod is connected with a guide slide block, and the other end of the pushing rod is connected with the connecting rod joint shaft. The track plate comprises a left-portion track plate, a right-portion track plate, a left-portion track support and a right-portion track support, wherein the left-portion track plate is provided with a left-portion track, the left-portion track includes a first-section track and a second-section track, the horizontal position of the first-section track is higher than the second-section track, the connecting rod is located on the inner side of the left-portion track, and the connecting rod guide bearing is located within the left-portion track. The pry lever mechanism achieves the mode that yarn loosening tube is fed from the bottom of a steel ring plate, and the yarn loosening tube is excellent in effect.