The utility model belongs to the technical field of nitrogen generator and specifically relates to a nitrogen generator device, it includes desiccator, prefiltration ware, activated carbon filter and nitrogen generator, the export of desiccator prefiltration ware, activated carbon filter connect gradually, activated carbon filter and nitrogen generator are connected, the output compress air of desiccator be 0.7MPa, compressed air dew point temperature does 35 DEG C. The utility model relates to a nitrogen generator device, (be instrument wind dew point temperature in to change to the dry pressure of desiccator instead 0.7mpa instrument wind compressed air at the general pressure compressed air of 0.8mpa 35 DEG C) about, the air quality is than the obvious improve of 0.8mpa. Thereby improve prefiltration ware, activated carbon filter life, the time expand was changed to 5 years to the active carbon. Reduce the compressed air cost simultaneously, make the workshop more stable with nitrogen gas.