The utility model discloses a gas well well head suspension type narrow tube medicament filling system, including instrument cluster and hanger, the instrument cluster be located the gas well, the hanger is in the well head of gas well, and the narrow tube connects with the instrument polyphone and hangs through the hanger, the ground manifold of confession medicine including being used for to the gas well in still, the ground manifold including annotating the agent pipe, the one end of notes agent pipe be equipped with and be used for connecting the general joint of annotating the agent pump, the other end is equipped with cutting ferrule formula crossover sub, cutting ferrule formula crossover sub be connected with the narrow tube, it reduces main equipment occupancy to reduce a large amount of operating costs.