In this paper, the design idea, construction content, and operation of three soil gas observation stations along the northern margin fault of West Qinling are introduced. Through an analysis of observation data in the past year, the background values of soil gas observed by the stations are considered stable, and the observation data are considered reasonable and reliable. The change patterns of the same measurement item at the three observation stations are similar and synchronous, and synchronous abnormal responses occurred before the Yuzhong M_S3.6, Maduo M_S7.4, and Menyuan M_S6.9 earthquakes. This finding shows that the soil gas along the northern margin of West Qinling potentially reflects the changes in regional tectonic stress. Furthermore, the construction scheme and technical indicators of fixed- point observation stations for fault soil gas provide a reference for establishing a fault soil gas observation network in the study area and lay a good foundation for further promotion and application.