The invention discloses a bag conveying mechanism for a bagging machine. The bag conveying mechanism comprises a bag discharging and paper rubbing wheel arranged above an inner cavity of a bag storage box, wherein the bag discharging and paper rubbing wheel is in contact with an uppermost folded bag in the bag storage box; a support plate is arranged in the bag storage box; bags stacked into piles up and down are placed in a cavity between the support plate and the bag discharging and paper rubbing wheel; the support plate is driven by an elastic mechanism to jack up the bags to one side of the bag discharging and paper rubbing wheel; the bag discharging and paper rubbing wheel rotates forwards to rub out the bag in contact with the bag discharging and paper rubbing wheel from a bag outlet of the bag storage box; a conveying wheel is arranged at the bag outlet outside the bag storage box; an upper conveying wheel and a lower conveying wheel of the conveying wheel rotate in opposite directions to push the bag to a bagging and sealing mechanism. The bag conveying mechanism provided by the invention creatively conveys the bags on the bagging machine in a form of paper rubbing wheel, has good bag conveying effect, and ensures the stable and orderly operation of the bagging machine.