Described is an ion air purifier. The ion air purifier includes a collector module (1) and a repeller module (2) which are connected in an openable and closable manner, wherein several collector plates (11) are uniformly distributed on the collector module (1), and several repeller plates (21) are uniformly distributed on the repeller module (2) and each collector plate (11) and each repeller plate (21) are alternately arranged when the two plates are in a closed state. Thus, an optimized distance between adjacent collector plates (11) and repeller plates (21) is ensured and when the collector module (1) and the repeller module (2) are in an opened state, the collector plates (11) are separated from the repeller plates (21), and the distance between two adjacent collector plates (11) and the distance between two adjacent repeller plates (21) are both increased, thereby facilitating cleaning of the collector module. Further described is a network air purifier.
