The utility model belongs to a swabbing trolley device of a gas well. The swabbing trolley device is characterized by at least comprising a base plate trolley, wherein a steel wire roller unit is fixed on the base plate trolley; a winding pulley is fixed at the upper end of a wellhead through a fixing frame; the steel wire roller unit is connected with a swabbing tool through the winding pulley and a steel wire rope; a steel wire rope metering wheel is arranged near the winding pulley and is required to be always contacted with the steel wire rope without sliding; a steel wire rope shaft type tension meter is arranged on the winding pullet; by a shaft type sensor, the influence of the ambient temperature can be avoided; the steel wire rope shaft type tension meter is electrically connected with a processing unit through a tension signal wire; the stele wire rope metering wheel is electrically connected with the processing unit through a steel wire length signal wire; and the steel wire rope roller unit is electrically connected with the processing unit through a hydraulic motor electric control wire. The processing unit is used for digitally acquiring a steel wire length signal and a tension signal; the acquired data is processed by a computer; and the computer controls the steel wire rope roller unit to work.