The utility model relates to a power equipment cabinet body humidity control device, especially a cabinet body humidity remote monitoring and intelligent dehydrating unit based on peltier effect. Including humidity acquisition member, semiconductor condenser, congealing water discharge member, controller and power, the controller is respectively with humidity acquisition member, semiconductor condenser, water discharge member is continuous with fixed attention, the power respectively with humidity acquisition member, semiconductor condenser, congeal water discharge member and the controller links to each other, for they provide the work electric energy, still include communication module, it is associative with the host computer that communication module passes through the RS232 interface.Can not only realize the automatic dehumidification of environment such as various low -voltage switch cabinet, terminal box, switch board, looped netowrk cabinet, switching station, guarantee spacedegree of drying, the operation of support equipment safety and stability, improve equipment operational reliability, the real -time supervision electrical equipment operation environment is realizedthe self -checking of dehydrating unit self running state and is patrolled and examined and the early warning, guarantees dehydrating unit operational reliability, avoids additional accident.