The utility model provides a gas -collecting device suitable for segment module ization construction of pilot production rank, including gas collection heating module, measurement separating module and pressure boost be defeated module outward, wherein gas collection heating module is including album air valve group and jacket heater, pass through the tube coupling between collection air valve group and the jacket heater, measurement separating module is including the production header, the measurement header, production separator and metering separator, the one end of production header is passed through the pipeline and is connected with jacket heater, the other end of production header is connected with production separator through the pipeline, the one end of measurement header is passed through the pipeline and is connected with jacket heater, the other end of measurement header passes through the pipeline and is connected with metering separator, the pressure boost outward defeated module including admit air the header with fail the separator outward, beneficial effect: compact structure has, the management of being convenient for, easy operation, investment cost be few, is applicable to pilot production gas collecting station's in the defeated technology of china's north alpine region gas field pilot production stage high pressure collection construction.