The power distributing cabinet in low voltage includes cabinet, air switch in cabinet, current transformer, and breaker etc. Characters are that the power distributing cabinet also contains graphics and text display device including data acquisition unit for collecting real time state information of distribution system, and CPU. Under control of CPU, data acquisition unit obtains real time state information of distribution system, and the text display device displays each switching value in the power distributing cabinet as well as state information and data value. Convenience is supplied by the invention for monitoring maintenance.