The utility model provides an australia si maite stove tail gas monitoring devices, belongs to non -ferrous metal metallurgy technical field, and including sampling probe, constant temperature machine cabinet and analytical instruments head, wherein, the constant temperature machine cabinet is inside including oil filter, cotton wool, cold box, peristaltic pump, level filtering ware, desiccant and membrane filter, sampling probe's tail end and oil filter and cotton wool are connected, cold box and peristaltic pump are connected, the sampling pump front end is provided with the level filtering ware, and the rear end is provided with desiccant and membrane filter, membrane filter's front end and desiccant are connected, and the rear end is connected with the analytical instruments head. The utility model discloses a multistage gas purification process has been overcome original gaseous monitoring devices and has easily been blockked up, and is perishable, has guaranteed the smooth and easy operation of technology, and relatively the volume of having the maintenance is low with original tail gas monitoring devices, and the fault rate is low, and the monitoring data is stable, for the staff provides material ratio reference data and relieving haperacidity data reliably, is favorable to production normal operation in succession.