The invention relates to an integrated up and down flow limiting and adjusting mechanism of a film executing mechanism. The integrated up and down flow limiting and adjusting mechanism of the film executing mechanism comprises a hexagon thin nut, a limiting unit, a screw rod, a locking nut, a screw rod seat, a sealing ring and an oil-free bush. The integrated up and down flow limiting and adjusting mechanism is characterized in that the limiting nut is installed on the top of an upper push rod of the executing mechanism in a threaded connection mode, the screw rod is installed in the screw rod seat in a threaded connection mode and the locking nut is matched with the screw rod through threads, installed on the top of the screw rod seat and provided with a set screw and a hex nut. Switching of functions can be achieved according to adjustment requirements. The screw rod seat is fixed on an upper film cover of the executing mechanism through a built-in bolt. The oil-free bush and the sealing ring are installed in the screw rod seat. The integrated up and down flow limiting and adjusting mechanism can play a role of guiding and sealing, meet the regular adjustment requirements of upper flow limiting or lower flow limiting and also can be adjusted in the full stroke while the upper flow limiting and lower flow limiting are performed.