The utility model discloses a +-800kV EHV converter station converter valve installation monitoring controlling device comprising a humiture detector used for detecting valve hall environment, a dust level detector, an atmospheric pressure transmitter, an inclination angle sensor detecting a hoisting angle of a hoist assembly, a speed sensor detecting an electric hoist and a monitoring host; signal output ends of the humiture detector, the dust level monitoring device, the atmospheric pressure transmitter, the inclination angle sensor and the speed sensor are connected with the monitoring host; a signal output end of the monitoring host is connected with an alarm unit; the +-800kV EHV converter station converter valve installation monitoring controlling device can monitor environment conditions and construction conditions in the valve hall in real time, ensures mounting quality of valve tower equipment, reduces system stop times caused by unqualified mounting quality, and reduces economic loss.