In the field of industrial gas flow measurement, vortex flowmeters, with their simple structure, high stability and wide application range, have become the ideal choice for monitoring the flow of various gases such as natural gas, steam and compressed air. Based on the Karman vortex street principle, it calculates the flow rate by detecting the vortex frequency generated when the fluid passes through the blocking fluid, and can achieve high-precision measurement without temperature and pressure compensation. The following is an analysis of the typical applications and technical advantages of vortex flowmeters in gas measurement.