Abstract: For problem of single function of existing mine-used acquisition modules, the paper proposed a design scheme of mine-used multi-function acquisition module and introduced design methods of main hardware circuits and software programs of the module in details. The module uses PGA of ADC to achieve accessing function of multiple analog signals, adopts digital filter to realize multiple detections of frequency and digital signals, and realizes control function of CPU output. The application result showed that the module can acquire multiple signals of field sensors and run stably and reliably.