The utility model relates to a presetting system is input instrument for adjustable choke in pit belongs to gas well presetting system adjustable choke's kit in the pit, input tool body and top connection including the integrated design, input tool body divide by hollow cylindrical portion and conical surface somatic part and form connect on, head position in the tip that conical surface somatic part divides, two cotter holes have been seted up to cylindrical portion's the upper and lower symmetry of surface for with the presetting system in the pit adjustable choke embrace, and put in to preset the seating nipple in, realize sitting anchorage sealing and decide, it is honored as a queen to sit will put in through the well testing steel wire that instrument cluster (containing the input instrument) more than the instrument is smooth to be risen, the utility model discloses simple structure, convenient operation, can satisfy the presetting system in the pit adjustable choke send into needs, application effect is showing, the practicality is strong, is fit for being applied to the gas well in the pit in the intelligence throttle technology.