Double-tube type atmosphere positive and negative ion monitor

The invention discloses double-tube type atmosphere positive and negative ion monitor, and relates to measurement of positive ions and negative ions in atmosphere, and comprises a negative ion collector, a positive ion collector, a signal processing circuit, a data processing system and a GPRS communication module which are connected in order. The negative ion collector and the positive ion collector are provided with dehumidifying apparatuses inside, thereby solving the problems of acquisition state instability of the original negative ion monitor and the inaccuracy of measured data. Moreover, common measuring instruments can not be operated at a high-moisture condition for a long time.